diff --git a/pkgs/applications/audio/GStreamer/default.nix b/pkgs/applications/audio/GStreamer/default.nix
index 89c6c745f083..607d2e9ce9fe 100644
--- a/pkgs/applications/audio/GStreamer/default.nix
+++ b/pkgs/applications/audio/GStreamer/default.nix
@@ -5,7 +5,7 @@
 stdenv.mkDerivation {
   name = "GStreamer-0.10.10";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gstreamer-0.10.10.tar.bz2;
+    url = http://gstreamer.freedesktop.org/src/gstreamer/gstreamer-0.10.10.tar.bz2;
     md5 = "6875bf0bd3cf38b9ae1362b9e644e6fc" ;
   };
 
diff --git a/pkgs/applications/audio/bmp-plugins/musepack/default.nix b/pkgs/applications/audio/bmp-plugins/musepack/default.nix
index 9b553dc1988b..141476642dee 100644
--- a/pkgs/applications/audio/bmp-plugins/musepack/default.nix
+++ b/pkgs/applications/audio/bmp-plugins/musepack/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "bmp-plugin-musepack-1.2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bmp-musepack-1.2.tar.bz2;
+    url = http://files2.musepack.net/linux/plugins/bmp-musepack-1.2.tar.bz2;
     md5 = "5fe0c9d341ca37d05c780a478f829a5f";
   };
   buildInputs = [pkgconfig bmp libmpcdec taglib];
diff --git a/pkgs/applications/audio/bmp/default.nix b/pkgs/applications/audio/bmp/default.nix
index 03dc5546c0c4..bd8f6370a881 100644
--- a/pkgs/applications/audio/bmp/default.nix
+++ b/pkgs/applications/audio/bmp/default.nix
@@ -5,7 +5,7 @@
 stdenv.mkDerivation {
   name = "bmp-0.9.7.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bmp-0.9.7.1.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/beepmp/bmp-0.9.7.1.tar.gz;
     md5 = "c25d5a8d49cc5851d13d525a20023c4c";
   };
 
diff --git a/pkgs/applications/audio/cdparanoia/default.nix b/pkgs/applications/audio/cdparanoia/default.nix
index 96b1c654fa7b..0d741899cdf2 100644
--- a/pkgs/applications/audio/cdparanoia/default.nix
+++ b/pkgs/applications/audio/cdparanoia/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "cdparanoia-III-alpha9.8";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cdparanoia-III-alpha9.8.src.tgz;
+    url = http://downloads.xiph.org/releases/cdparanoia/cdparanoia-III-alpha9.8.src.tgz ;
     md5 = "7218e778b5970a86c958e597f952f193" ;
   };
   
diff --git a/pkgs/applications/audio/flac/default.nix b/pkgs/applications/audio/flac/default.nix
index 7e0439d60bfa..6d6b07348ff9 100644
--- a/pkgs/applications/audio/flac/default.nix
+++ b/pkgs/applications/audio/flac/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "flac-1.1.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/flac-1.1.2.tar.gz;
+    url = http://downloads.xiph.org/releases/flac/flac-1.1.2.tar.gz;
     md5 = "2bfc127cdda02834d0491ab531a20960" ;
   };
 
diff --git a/pkgs/applications/audio/lame/default.nix b/pkgs/applications/audio/lame/default.nix
index 11ff7ae0bdb4..d995dc8222ed 100644
--- a/pkgs/applications/audio/lame/default.nix
+++ b/pkgs/applications/audio/lame/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "lame-3.96.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/lame-3.96.1.tar.gz;
+    url = http://mesh.dl.sourceforge.net/sourceforge/lame/lame-3.96.1.tar.gz ;
     md5 = "e1206c46a5e276feca11a7149e2fc6ac" ;
   };
 }
diff --git a/pkgs/applications/editors/eclipse/eclipse-sdk-3.1.nix b/pkgs/applications/editors/eclipse/eclipse-sdk-3.1.nix
index bfceaa157709..0627d5d13e81 100644
--- a/pkgs/applications/editors/eclipse/eclipse-sdk-3.1.nix
+++ b/pkgs/applications/editors/eclipse/eclipse-sdk-3.1.nix
@@ -12,7 +12,7 @@ let {
 
   bindist = 
     fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/eclipse-SDK-3.1-linux-gtk.tar.gz;
+      url = http://sunsite.informatik.rwth-aachen.de/eclipse/downloads/drops/R-3.1-200506271435/eclipse-SDK-3.1-linux-gtk.tar.gz;
       md5 = "0441c11cc5af1e84ed3be322929899e8";
     };
 }
diff --git a/pkgs/applications/editors/eclipse/plugins/spoofax/0.3.0.nix b/pkgs/applications/editors/eclipse/plugins/spoofax/0.3.0.nix
index abca499a715b..3d61fbbe809e 100644
--- a/pkgs/applications/editors/eclipse/plugins/spoofax/0.3.0.nix
+++ b/pkgs/applications/editors/eclipse/plugins/spoofax/0.3.0.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl}:
 
 fetchurl {
-  url = http://nix.cs.uu.nl/dist/tarballs/org.spoofax.editor_0.3.0.jar;
+  url = http://www.ii.uib.no/~karltk/spoofax/plugins/org.spoofax.editor_0.3.0.jar;
   md5 = "ff66d229c774f840ec8285f64c0f95bc";
 }
diff --git a/pkgs/applications/editors/eclipse/plugins/spoofax/default.nix b/pkgs/applications/editors/eclipse/plugins/spoofax/default.nix
index d926064a4dba..649619e487e8 100644
--- a/pkgs/applications/editors/eclipse/plugins/spoofax/default.nix
+++ b/pkgs/applications/editors/eclipse/plugins/spoofax/default.nix
@@ -1,6 +1,6 @@
 {stdenv, fetchurl}:
 
 fetchurl {
-  url = http://nix.cs.uu.nl/dist/tarballs/org.spoofax.editor_0.3.11.jar;
+  url = http://www.ii.uib.no/~karltk/spoofax/plugins/org.spoofax.editor_0.3.11.jar;
   md5 = "c36941afcb0e538e16fafd594eae128e";
 }
diff --git a/pkgs/applications/editors/joe/default.nix b/pkgs/applications/editors/joe/default.nix
index 33336355326d..cc6db1c2e8ee 100644
--- a/pkgs/applications/editors/joe/default.nix
+++ b/pkgs/applications/editors/joe/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
 name = "joe-3.3";
 src = fetchurl {
-         url = http://nix.cs.uu.nl/dist/tarballs/joe-3.3.tar.gz;
+         url = http://surfnet.dl.sourceforge.net/sourceforge/joe-editor/joe-3.3.tar.gz;
          md5 = "02221716679c039c5da00c275d61dbf4";
    };
 }
diff --git a/pkgs/applications/editors/nedit/default.nix b/pkgs/applications/editors/nedit/default.nix
index a6bfe1f3dae4..345eccb0ff9d 100644
--- a/pkgs/applications/editors/nedit/default.nix
+++ b/pkgs/applications/editors/nedit/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/nedit-5.5-src.tar.bz2;
+    url = http://nl.nedit.org/ftp/v5_5/nedit-5.5-src.tar.bz2;
     md5 = "48cb3dce52d44988f3a4d7c6f47b6bbe";
   };
   patches = [./dynamic.patch];
diff --git a/pkgs/applications/editors/vim-diet/default.nix b/pkgs/applications/editors/vim-diet/default.nix
index 5c6991b895ce..76c022896fe9 100644
--- a/pkgs/applications/editors/vim-diet/default.nix
+++ b/pkgs/applications/editors/vim-diet/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "vim-7.0";
  
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/vim-7.0.tar.bz2;
+    url = ftp://ftp.vim.org/pub/vim/unix/vim-7.0.tar.bz2;
     md5 = "4ca69757678272f718b1041c810d82d8";
   };
  
diff --git a/pkgs/applications/graphics/inkscape/default.nix b/pkgs/applications/graphics/inkscape/default.nix
index 244890fd4538..61bff9915341 100644
--- a/pkgs/applications/graphics/inkscape/default.nix
+++ b/pkgs/applications/graphics/inkscape/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   name = "inkscape-0.43";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/inkscape-0.43.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/inkscape/inkscape-0.43.tar.bz2;
     md5 = "97c606182f5e177eef70c1e8a55efc1f";
   };
 
diff --git a/pkgs/applications/graphics/kuickshow/default.nix b/pkgs/applications/graphics/kuickshow/default.nix
index fa05e413c4f3..83fac86bf813 100644
--- a/pkgs/applications/graphics/kuickshow/default.nix
+++ b/pkgs/applications/graphics/kuickshow/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/kuickshow-0.8.5.tgz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/kuickshow/kuickshow-0.8.5.tgz;
     md5 = "7a95852a0670b18859a1e6789b256ebd";
   };
 
diff --git a/pkgs/applications/misc/bluez-firmware/default.nix b/pkgs/applications/misc/bluez-firmware/default.nix
index af5dcc007336..91b8dbdf8f48 100644
--- a/pkgs/applications/misc/bluez-firmware/default.nix
+++ b/pkgs/applications/misc/bluez-firmware/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "bluez-firmware-1.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bluez-firmware-1.1.tar.gz;
+    url = http://bluez.sf.net/download/bluez-firmware-1.1.tar.gz;
     md5 = "2f1c2d939108c865dd07bae3e819c573";
   };
 }
diff --git a/pkgs/applications/misc/bluez-utils/default.nix b/pkgs/applications/misc/bluez-utils/default.nix
index 5705d2ce1ca5..7cf88851fc3c 100644
--- a/pkgs/applications/misc/bluez-utils/default.nix
+++ b/pkgs/applications/misc/bluez-utils/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "bluez-utils-2.25";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bluez-utils-2.25.tar.gz;
+    url = http://bluez.sf.net/download/bluez-utils-2.25.tar.gz;
     md5 = "ae3729ab5592be06ed01b973d4b3e9fe";
   };
   buildInputs = [bluezLibs];
diff --git a/pkgs/applications/misc/cdrtools/default.nix b/pkgs/applications/misc/cdrtools/default.nix
index 5354fbeede4f..4c00e13c59b5 100644
--- a/pkgs/applications/misc/cdrtools/default.nix
+++ b/pkgs/applications/misc/cdrtools/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "cdrtools-2.01";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cdrtools-2.01.tar.bz2;
+    url = ftp://ftp.berlios.de/pub/cdrecord/cdrtools-2.01.tar.bz2;
     md5 = "d44a81460e97ae02931c31188fe8d3fd";
   };
   patches = [./cdrtools-2.01-install.patch];
diff --git a/pkgs/applications/misc/gphoto2/default.nix b/pkgs/applications/misc/gphoto2/default.nix
index c04f7d12c05a..0f4af78213df 100644
--- a/pkgs/applications/misc/gphoto2/default.nix
+++ b/pkgs/applications/misc/gphoto2/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gphoto2-2.2.0";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gphoto2-2.2.0.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/gphoto/gphoto2-2.2.0.tar.bz2;
     md5 = "f5c1f83185db598b4ca52889964a5e84";
   };
   buildInputs = [pkgconfig libgphoto2 libexif popt];
diff --git a/pkgs/applications/misc/hello/ex-1/default.nix b/pkgs/applications/misc/hello/ex-1/default.nix
index b35c8adc390e..9bcd2340e377 100644
--- a/pkgs/applications/misc/hello/ex-1/default.nix
+++ b/pkgs/applications/misc/hello/ex-1/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "hello-2.1.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/hello-2.1.1.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/hello/hello-2.1.1.tar.gz;
     md5 = "70c9ccf9fac07f762c24f2df2290784d";
   };
   inherit perl;
diff --git a/pkgs/applications/misc/hello/ex-2/default.nix b/pkgs/applications/misc/hello/ex-2/default.nix
index 78a436e4ad7c..017ccf617ed5 100644
--- a/pkgs/applications/misc/hello/ex-2/default.nix
+++ b/pkgs/applications/misc/hello/ex-2/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "hello-2.1.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/hello-2.1.1.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/hello/hello-2.1.1.tar.gz;
     md5 = "70c9ccf9fac07f762c24f2df2290784d";
   };
   buildInputs = [perl];
diff --git a/pkgs/applications/misc/pinfo/default.nix b/pkgs/applications/misc/pinfo/default.nix
index 9647349af5a2..b44cca5ff2c5 100644
--- a/pkgs/applications/misc/pinfo/default.nix
+++ b/pkgs/applications/misc/pinfo/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "pinfo-0.6.8";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pinfo-0.6.8.tar.gz;
+    url = http://dione.cc/~pborys/software/pinfo/pinfo-0.6.8.tar.gz;
     md5 = "55feb4ebaa709b52bd00a15ed0fb52fb";
   };
   buildInputs = [ncurses];
diff --git a/pkgs/applications/misc/xchm/default.nix b/pkgs/applications/misc/xchm/default.nix
index 338ac1363c54..1137a9d88385 100644
--- a/pkgs/applications/misc/xchm/default.nix
+++ b/pkgs/applications/misc/xchm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "xchm-1.9";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xchm-1.9.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/xchm/xchm-1.9.tar.gz;
     md5 = "12e1faf49447c743c5c936636cd8a172";
   };
   buildInputs = [wxGTK chmlib];
diff --git a/pkgs/applications/misc/xterm/default.nix b/pkgs/applications/misc/xterm/default.nix
index 6bf84d4f9668..c14ceb84e87e 100644
--- a/pkgs/applications/misc/xterm/default.nix
+++ b/pkgs/applications/misc/xterm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "xterm-208";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xterm.tar.gz;
+    url = ftp://invisible-island.net/xterm/xterm.tar.gz;
     md5 = "a062d0b398918015d07c31ecdcc5111a";
   };
   buildInputs = [libXaw xproto libXt libX11 libSM libICE ncurses];
diff --git a/pkgs/applications/networking/browsers/links/default.nix b/pkgs/applications/networking/browsers/links/default.nix
index ce1ee2d2c921..6bbd0fc800c1 100644
--- a/pkgs/applications/networking/browsers/links/default.nix
+++ b/pkgs/applications/networking/browsers/links/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "links-1.00pre15";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/links-1.00pre15.tar.gz;
+    url = http://artax.karlin.mff.cuni.cz/~mikulas/links/download/links-1.00pre15.tar.gz;
     md5 = "f64823b9a1ac2d79df578a991dfae8b8";
   };
 }
diff --git a/pkgs/applications/networking/browsers/mozilla/default.nix b/pkgs/applications/networking/browsers/mozilla/default.nix
index 67d7726e680f..cb7573eb8a14 100644
--- a/pkgs/applications/networking/browsers/mozilla/default.nix
+++ b/pkgs/applications/networking/browsers/mozilla/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mozilla-1.7.12-source.tar.bz2;
+    url = http://ftp.mozilla.org/pub/mozilla.org/mozilla/releases/mozilla1.7.12/source/mozilla-1.7.12-source.tar.bz2;
     md5 = "f1ad6adbbc0510eb76d352c94c801fac";
   };
 
diff --git a/pkgs/applications/networking/browsers/opera/default.nix b/pkgs/applications/networking/browsers/opera/default.nix
index 02726326df21..39339dfd8f3c 100644
--- a/pkgs/applications/networking/browsers/opera/default.nix
+++ b/pkgs/applications/networking/browsers/opera/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/opera-9.02-20060919.5-shared-qt.i386-en.tar.bz2;
+    url = ftp://ftp.tiscali.nl/pub/mirrors/opera/linux/902/final/en/i386/shared/opera-9.02-20060919.5-shared-qt.i386-en.tar.bz2;
     md5 = "327d0bf1f3c4eedd47b444b36c9091f6";
   };
 
diff --git a/pkgs/applications/networking/browsers/w3m/default.nix b/pkgs/applications/networking/browsers/w3m/default.nix
index aafcaf4d00c9..227c7d1b35b6 100644
--- a/pkgs/applications/networking/browsers/w3m/default.nix
+++ b/pkgs/applications/networking/browsers/w3m/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation {
   name = "w3m-0.5.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/w3m-0.5.1.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/w3m/w3m-0.5.1.tar.gz;
     md5 = "0678b72e07e69c41709d71ef0fe5da13";
   };
   inherit openssl boehmgc;
diff --git a/pkgs/applications/networking/irc/chatzilla/default.nix b/pkgs/applications/networking/irc/chatzilla/default.nix
index 61d049f93ce1..768e19842c18 100644
--- a/pkgs/applications/networking/irc/chatzilla/default.nix
+++ b/pkgs/applications/networking/irc/chatzilla/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   src = fetchurl {
     # Obtained from http://chatzilla.rdmsoft.com/xulrunner/.
-    url = http://nix.cs.uu.nl/dist/tarballs/chatzilla-0.9.74-xr.zip;
+    url = http://chatzilla.rdmsoft.com/xulrunner/download/chatzilla-0.9.74-xr.zip;
     md5 = "a1eada15b172eab6a771afa5f8670f7a";
   };
 
diff --git a/pkgs/applications/networking/p2p/valknut/default.nix b/pkgs/applications/networking/p2p/valknut/default.nix
index 5dc1bdf5ed93..994f6b44f943 100644
--- a/pkgs/applications/networking/p2p/valknut/default.nix
+++ b/pkgs/applications/networking/p2p/valknut/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/valknut-0.3.7.tar.bz2;
+    url = http://download.berlios.de/dcgui/valknut-0.3.7.tar.bz2;
     md5 = "848f9b3f25af15c3f1837133ac4b9415";
   };
 
diff --git a/pkgs/applications/office/openoffice/default.nix b/pkgs/applications/office/openoffice/default.nix
index e40324c0df4f..cf142e3ad744 100644
--- a/pkgs/applications/office/openoffice/default.nix
+++ b/pkgs/applications/office/openoffice/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "openoffice.org-2.0.0";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/OOo_2.0.0_src.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/office/openoffice/stable/2.0.0/OOo_2.0.0_src.tar.gz;
     md5 = "a68933afc2bf432d11b2043ac99ba0aa";
     #url = http://ftp.snt.utwente.nl/pub/software/openoffice/stable/2.2.1/OOo_2.2.1_src_core.tar.bz2;
     #sha256 = "adc54c88892f5ced9887945709856efeb628fe5f7b5b2f2aa7797c5391b9c7d6";
diff --git a/pkgs/applications/version-management/cvs/default.nix b/pkgs/applications/version-management/cvs/default.nix
index 5460cc11b62f..cb6a4dbf6f81 100644
--- a/pkgs/applications/version-management/cvs/default.nix
+++ b/pkgs/applications/version-management/cvs/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "cvs-1.12.13";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cvs-1.12.13.tar.bz2;
+    url = http://ftp.gnu.org/non-gnu/cvs/source/feature/1.12.13/cvs-1.12.13.tar.bz2;
     md5 = "956ab476ce276c2d19d583e227dbdbea";
   };
   buildInputs = [vim];
diff --git a/pkgs/applications/version-management/rcs/default.nix b/pkgs/applications/version-management/rcs/default.nix
index a12bbdc1e9f4..6fb111c47a33 100644
--- a/pkgs/applications/version-management/rcs/default.nix
+++ b/pkgs/applications/version-management/rcs/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "rcs-5.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/rcs-5.7.tar;
+    url = ftp://ftp.cs.purdue.edu/pub/RCS/rcs-5.7.tar;
     md5 = "f7b3f106bf87ff6344df38490f6a02c5";
   };
 }
diff --git a/pkgs/applications/version-management/subversion-1.2.x/default.nix b/pkgs/applications/version-management/subversion-1.2.x/default.nix
index 495cbbbacdde..e6932d481f12 100644
--- a/pkgs/applications/version-management/subversion-1.2.x/default.nix
+++ b/pkgs/applications/version-management/subversion-1.2.x/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/subversion-1.2.3.tar.bz2;
+    url = http://subversion.tigris.org/downloads/subversion-1.2.3.tar.bz2;
     md5 = "a14bc6590241b6e5c2ff2b354cc184a1";
   };
 
diff --git a/pkgs/applications/version-management/subversion-1.3.x/default.nix b/pkgs/applications/version-management/subversion-1.3.x/default.nix
index 394cbda2dd59..421cd043858a 100644
--- a/pkgs/applications/version-management/subversion-1.3.x/default.nix
+++ b/pkgs/applications/version-management/subversion-1.3.x/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/subversion-1.3.2.tar.bz2;
+    url = http://subversion.tigris.org/downloads/subversion-1.3.2.tar.bz2;
     sha1 = "688ab178db1f6acb2ad3bd99f030402621f837b6";
   };
 
diff --git a/pkgs/applications/video/mythtv/default.nix b/pkgs/applications/video/mythtv/default.nix
index 148612834f8a..fbec28a78312 100644
--- a/pkgs/applications/video/mythtv/default.nix
+++ b/pkgs/applications/video/mythtv/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mythtv-0.20.tar.bz2;
+    url = http://ftp.osuosl.org/pub/mythtv/mythtv-0.20.tar.bz2;
     md5 = "52bec1e0fadf7d24d6dcac3f773ddf74";
   };
 
diff --git a/pkgs/applications/video/xawtv/default.nix b/pkgs/applications/video/xawtv/default.nix
index 48721d3467c8..aaa83ccc1449 100644
--- a/pkgs/applications/video/xawtv/default.nix
+++ b/pkgs/applications/video/xawtv/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "xawtv-3.95";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xawtv-3.95.tar.gz;
+    url = http://dl.bytesex.org/releases/xawtv/xawtv-3.95.tar.gz;
     md5 = "ad25e03f7e128b318e392cb09f52207d";
   };
   buildInputs = [ncurses libjpeg libX11 libXt libXft xproto libFS fontsproto libXaw libXpm libXext libSM libICE perl xextproto];
diff --git a/pkgs/applications/video/zapping/default.nix b/pkgs/applications/video/zapping/default.nix
index 6eae79ddbe12..444cd974f8f4 100644
--- a/pkgs/applications/video/zapping/default.nix
+++ b/pkgs/applications/video/zapping/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zapping-0.9.6.tar.bz2;
+    url = http://heanet.dl.sourceforge.net/sourceforge/zapping/zapping-0.9.6.tar.bz2;
     md5 = "8306775c6a11de4d72345b5eee970ea6";
   };
 
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.2/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.2/default.nix
index e08350cdc7f6..c3bd87a6d2f7 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.2/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.2/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "docbook-xml-4.2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/docbook-xml-4.2.zip;
+    url = http://www.docbook.org/xml/4.2/docbook-xml-4.2.zip;
     md5 = "73fe50dfe74ca631c1602f558ed8961f";
   };
   buildInputs = [unzip];
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.3/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.3/default.nix
index 68319b08c355..93b5165724e4 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.3/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-4.3/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "docbook-xml-4.3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/docbook-xml-4.3.zip;
+    url = http://www.docbook.org/xml/4.3/docbook-xml-4.3.zip;
     md5 = "ab200202b9e136a144db1e0864c45074";
   };
   buildInputs = [unzip];
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
index d574ff2a8139..5d5a622ba422 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "docbook-xml-ebnf-1.2b1";
   builder = ./builder.sh;
   dtd = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/dbebnf-1.2b1.dtd;
+    url = http://www.docbook.org/xml/ebnf/1.2b1/dbebnf.dtd;
     md5 = "e50f7d38caf4285965c7a247e026fa7c";
   };
   catalog = ./docbook-ebnf.cat;
diff --git a/pkgs/development/compilers/abc/default.nix b/pkgs/development/compilers/abc/default.nix
index 46e905edb8f8..1a71b808827e 100644
--- a/pkgs/development/compilers/abc/default.nix
+++ b/pkgs/development/compilers/abc/default.nix
@@ -7,7 +7,7 @@ let {
       builder = ./builder.sh;
 
       src = fetchurl {
-        url = http://nix.cs.uu.nl/dist/tarballs/abc-1.2.0-src.tar.gz;
+        url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/abc-1.2.0-src.tar.gz;
         md5 = "aef9e8eac860f904f2a841e18770dc47";
       };
 
@@ -39,7 +39,7 @@ let {
       jarname = "jedd.runtime";
       builder = ./builder-binjar.sh;
       src = fetchurl {
-        url = http://nix.cs.uu.nl/dist/tarballs/jedd-runtime-snapshot.jar;
+        url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/lib/jedd-runtime-snapshot.jar;
         md5 = "595c5ac2f6384f4c34f1854891b5e422";
       };
     };
@@ -50,7 +50,7 @@ let {
       jarname = "javabdd";
       builder = ./builder-binjar.sh;
       src = fetchurl {
-        url = http://nix.cs.uu.nl/dist/tarballs/javabdd_0.6.jar;
+        url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/lib/javabdd_0.6.jar;
         md5 = "6e0246e891b7431f4e7265b5b1471307";
       };
     };
@@ -61,7 +61,7 @@ let {
       jarname = "paddle";
       builder = ./builder-binjar.sh;
       src = fetchurl {
-        url = http://nix.cs.uu.nl/dist/tarballs/paddle-snapshot.jar;
+        url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/lib/paddle-snapshot.jar;
         md5 = "a8e032310137945124a2850cd8cfc277";
       };
     };
@@ -72,7 +72,7 @@ let {
       jarname = "xact";
       builder = ./builder-binjar.sh;
       src = fetchurl {
-        url = http://nix.cs.uu.nl/dist/tarballs/xact-complete-1.0-1.jar;
+        url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/lib/xact-complete-1.0-1.jar;
         md5 = "9810ad8762101ea691a895f0a6b7a5c3";
       };
     };
diff --git a/pkgs/development/compilers/abc/jasmin/default.nix b/pkgs/development/compilers/abc/jasmin/default.nix
index 76e73b8d5b5e..0c93e5893a59 100644
--- a/pkgs/development/compilers/abc/jasmin/default.nix
+++ b/pkgs/development/compilers/abc/jasmin/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jasmin-dev-20060422015512.tar.gz;
+    url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/jasmin-dev-20060422015512.tar.gz;
     md5 = "0e49e532b4658c959582c5d5b5e28bf1";
   };
 
diff --git a/pkgs/development/compilers/abc/polyglot/default.nix b/pkgs/development/compilers/abc/polyglot/default.nix
index 568e415cf7bf..99ca28d04554 100644
--- a/pkgs/development/compilers/abc/polyglot/default.nix
+++ b/pkgs/development/compilers/abc/polyglot/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/polyglot-dev-20060422015512.tar.gz;
+    url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/polyglot-dev-20060422015512.tar.gz;
     md5 = "6972fe537b4edd41872ed1cf24d24b50";
   };
 
diff --git a/pkgs/development/compilers/abc/soot/default.nix b/pkgs/development/compilers/abc/soot/default.nix
index 77f465f0a5fd..818d2bde624e 100644
--- a/pkgs/development/compilers/abc/soot/default.nix
+++ b/pkgs/development/compilers/abc/soot/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/soot-dev-20060422015512.tar.gz;
+    url = http://abc.comlab.ox.ac.uk/dists/1.2.0/files/soot-dev-20060422015512.tar.gz;
     md5 = "20dae3e31215b7ec88e3ff32a107d713";
   };
 
diff --git a/pkgs/development/compilers/aspectj/default.nix b/pkgs/development/compilers/aspectj/default.nix
index 72b512429182..5884c5ea6924 100644
--- a/pkgs/development/compilers/aspectj/default.nix
+++ b/pkgs/development/compilers/aspectj/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/aspectj-1.5.2.jar;
+    url = http://www.mirrorservice.org/sites/download.eclipse.org/eclipseMirror/technology/aspectj/aspectj-1.5.2.jar;
     md5 = "64245d451549325147e3ca1ec4c9e57c";
   };
 
diff --git a/pkgs/development/compilers/gcc-2.95/default.nix b/pkgs/development/compilers/gcc-2.95/default.nix
index 223647c295b6..c95a90277585 100644
--- a/pkgs/development/compilers/gcc-2.95/default.nix
+++ b/pkgs/development/compilers/gcc-2.95/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   name = "gcc-2.95.3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gcc-2.95.3.tar.gz;
+    url = ftp://ftp.gnu.org/pub/gnu/gcc/gcc-2.95.3.tar.gz;
     md5 = "f3ad4f32c2296fad758ed051b5ac8e28";
   };
   # !!! apply only if noSysDirs is set
diff --git a/pkgs/development/compilers/gcc-3.3/default.nix b/pkgs/development/compilers/gcc-3.3/default.nix
index 85420d22048d..fc5d7a9bb976 100644
--- a/pkgs/development/compilers/gcc-3.3/default.nix
+++ b/pkgs/development/compilers/gcc-3.3/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
   name = "gcc-3.3.6";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gcc-3.3.6.tar.bz2;
+    url = http://ftp.gnu.org/gnu/gcc/gcc-3.3.6/gcc-3.3.6.tar.bz2;
     md5 = "6936616a967da5a0b46f1e7424a06414";
   };
   inherit noSysDirs langC langCC langF77;
diff --git a/pkgs/development/compilers/gcc-3.4/default.nix b/pkgs/development/compilers/gcc-3.4/default.nix
index 3ceeb7b5d999..7e1bceb6dfd2 100644
--- a/pkgs/development/compilers/gcc-3.4/default.nix
+++ b/pkgs/development/compilers/gcc-3.4/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
   name = "gcc-3.4.6";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gcc-3.4.6.tar.bz2;
+    url = ftp://ftp.nluug.nl/pub/gnu/gcc/gcc-3.4.6/gcc-3.4.6.tar.bz2;
     md5 = "4a21ac777d4b5617283ce488b808da7b";
   };
 
diff --git a/pkgs/development/compilers/gcc-apple/default.nix b/pkgs/development/compilers/gcc-apple/default.nix
index 47d81c6e6ac8..6044a93a70fa 100644
--- a/pkgs/development/compilers/gcc-apple/default.nix
+++ b/pkgs/development/compilers/gcc-apple/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
   name = "gcc-4.0.1-apple-5341";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gcc-5341.tar.gz;
+    url = http://www.opensource.apple.com/darwinsource/tarballs/other/gcc-5341.tar.gz;
     md5 = "a135f107ddc55b773b40dfff4f049640";
   };
   patches =
diff --git a/pkgs/development/compilers/ghc/default.nix b/pkgs/development/compilers/ghc/default.nix
index 0aeb8086a1d3..c175f242ff10 100644
--- a/pkgs/development/compilers/ghc/default.nix
+++ b/pkgs/development/compilers/ghc/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "ghc-6.4.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ghc-6.4.2-src.tar.bz2;
+    url = http://www.haskell.org/ghc/dist/6.4.2/ghc-6.4.2-src.tar.bz2;
     md5 = "a394bf14e94c3bca5507d568fcc03375";
   };
   buildInputs = [perl ghc m4];
diff --git a/pkgs/development/compilers/gwydion-dylan/binary.nix b/pkgs/development/compilers/gwydion-dylan/binary.nix
index e453bef5d455..0ac942d14b89 100644
--- a/pkgs/development/compilers/gwydion-dylan/binary.nix
+++ b/pkgs/development/compilers/gwydion-dylan/binary.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "binary-gwydion-dylan-2.4.0";
   builder = ./binary-builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gwydion-dylan-2.4.0-x86-linux.tar.gz;
+    url = http://www.gwydiondylan.org/downloads/binaries/linux/x86/tar/gwydion-dylan-2.4.0-x86-linux.tar.gz;
     md5 = "52643ad51a455d21fd4d5bf82d98914c";
   };
 }
diff --git a/pkgs/development/compilers/gwydion-dylan/default.nix b/pkgs/development/compilers/gwydion-dylan/default.nix
index 443fbaff7293..7c00e65d7ccd 100644
--- a/pkgs/development/compilers/gwydion-dylan/default.nix
+++ b/pkgs/development/compilers/gwydion-dylan/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "gwydion-dylan-2.4.0";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gwydion-dylan-2.4.0.tar.gz;
+    url = http://www.gwydiondylan.org/downloads/src/tar/gwydion-dylan-2.4.0.tar.gz;
     md5 = "7ed180bf4ef11e8e8da3bd78b45477a8";
   };
 
diff --git a/pkgs/development/compilers/jikes/default.nix b/pkgs/development/compilers/jikes/default.nix
index 30efc0083d6c..21bd4167113b 100644
--- a/pkgs/development/compilers/jikes/default.nix
+++ b/pkgs/development/compilers/jikes/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "jikes-1.22";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jikes-1.22.tar.bz2;
+    url = http://mesh.dl.sourceforge.net/sourceforge/jikes/jikes-1.22.tar.bz2;
     md5 = "cda958c7fef6b43b803e1d1ef9afcb85";
   };
 }
diff --git a/pkgs/development/compilers/nasm/default.nix b/pkgs/development/compilers/nasm/default.nix
index 752819fa2532..caf1133072c1 100644
--- a/pkgs/development/compilers/nasm/default.nix
+++ b/pkgs/development/compilers/nasm/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "nasm-0.98.39";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/nasm-0.98.39.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/nasm/nasm-0.98.39.tar.bz2;
     md5 = "2032ad44c7359f7a9a166a40a633e772";
   };
 }
diff --git a/pkgs/development/compilers/ocaml/ocaml-3.09.1.nix b/pkgs/development/compilers/ocaml/ocaml-3.09.1.nix
index 12e06720b968..996012d6b277 100644
--- a/pkgs/development/compilers/ocaml/ocaml-3.09.1.nix
+++ b/pkgs/development/compilers/ocaml/ocaml-3.09.1.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ocaml-3.09.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ocaml-3.09.1.tar.gz;
+    url = http://caml.inria.fr/pub/distrib/ocaml-3.09/ocaml-3.09.1.tar.gz;
     md5 = "c73f4b093e27ba5bf13d62923f89befc";
   };
   configureScript = ./configure-3.09.1;
diff --git a/pkgs/development/compilers/opencxx/default.nix b/pkgs/development/compilers/opencxx/default.nix
index 8aabb10fdc38..55d06ade75b6 100644
--- a/pkgs/development/compilers/opencxx/default.nix
+++ b/pkgs/development/compilers/opencxx/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "opencxx-2.8";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/opencxx-2.8.tar.gz;
+    url = http://mesh.dl.sourceforge.net/sourceforge/opencxx/opencxx-2.8.tar.gz;
     md5 = "0f71df82751fe8aba5122d6e0541c98a";
   };
 
diff --git a/pkgs/development/compilers/transformers/transformers-0.4.nix b/pkgs/development/compilers/transformers/transformers-0.4.nix
index f4d0049af950..557406cadca8 100644
--- a/pkgs/development/compilers/transformers/transformers-0.4.nix
+++ b/pkgs/development/compilers/transformers/transformers-0.4.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   name = "transformers-0.4";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/transformers-0.4.tar.bz2;
+    url = http://www.lrde.epita.fr/dload/transformers/transformers-0.4.tar.bz2;
     md5 = "19f5b752aec5f4d09cf45cc199fd5bfb";
   };
 
diff --git a/pkgs/development/eclipse/ecj/default.nix b/pkgs/development/eclipse/ecj/default.nix
index c331db328c15..44e2a1edd0d3 100644
--- a/pkgs/development/eclipse/ecj/default.nix
+++ b/pkgs/development/eclipse/ecj/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ecj-3.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/eclipse-sourceBuild-srcIncluded-3.1.zip;
+    url = ftp://sunsite.informatik.rwth-aachen.de/pub/mirror/eclipse/R-3.1-200506271435/eclipse-sourceBuild-srcIncluded-3.1.zip;
     md5 = "19ad65d52005da5eaa1d3687b3a50de2";
   };
 
diff --git a/pkgs/development/eclipse/jdt-sdk/default.nix b/pkgs/development/eclipse/jdt-sdk/default.nix
index c46ee781ab00..4734522b5f48 100644
--- a/pkgs/development/eclipse/jdt-sdk/default.nix
+++ b/pkgs/development/eclipse/jdt-sdk/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "eclipse-jdt-sdk-3.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/eclipse-JDT-SDK-3.1.zip;
+    url = http://sunsite.informatik.rwth-aachen.de/eclipse/downloads/drops/R-3.1-200506271435/eclipse-JDT-SDK-3.1.zip;
     md5 = "665b51beaa718b2fec6b0155ed369f76";
   };
 
diff --git a/pkgs/development/interpreters/kaffe/default.nix b/pkgs/development/interpreters/kaffe/default.nix
index 7e5c2d5dc172..6f7ba6c18e9d 100644
--- a/pkgs/development/interpreters/kaffe/default.nix
+++ b/pkgs/development/interpreters/kaffe/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "kaffe-1.1.4";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/kaffe-1.1.4.tar.gz;
+    url = ftp://ftp.kaffe.org/pub/kaffe/v1.1.x-development/kaffe-1.1.4.tar.gz;
     md5 = "94d6e7035ba68c2221dce68bb5b3f6e9";
   };
   inherit jikes alsaLib;
diff --git a/pkgs/development/interpreters/lua-4/default.nix b/pkgs/development/interpreters/lua-4/default.nix
index ceec2678ecec..9502a9a0860f 100644
--- a/pkgs/development/interpreters/lua-4/default.nix
+++ b/pkgs/development/interpreters/lua-4/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "lua-4.0.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/lua-4.0.1.tar.gz;
+    url = http://www.lua.org/ftp/lua-4.0.1.tar.gz;
     md5 = "a31d963dbdf727f9b34eee1e0d29132c";
   };
   builder= ./builder.sh;
diff --git a/pkgs/development/interpreters/octave/default.nix b/pkgs/development/interpreters/octave/default.nix
index 6b85a1edfdc1..787682f1e2c0 100644
--- a/pkgs/development/interpreters/octave/default.nix
+++ b/pkgs/development/interpreters/octave/default.nix
@@ -6,7 +6,7 @@ assert g77.langF77;
 stdenv.mkDerivation {
   name = "octave-2.9.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/octave-2.9.6.tar.bz2;
+    url = ftp://ftp.octave.org/pub/octave/bleeding-edge/octave-2.9.6.tar.bz2;
     md5 = "10f07dbc0951a7318502a9f1e51e6388";
   };
   buildInputs = [g77 readline ncurses perl flex];
diff --git a/pkgs/development/interpreters/tcl/default.nix b/pkgs/development/interpreters/tcl/default.nix
index 6e7d78103954..d6e6b9df71b7 100644
--- a/pkgs/development/interpreters/tcl/default.nix
+++ b/pkgs/development/interpreters/tcl/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "tcl-8.4.13";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tcl8.4.13-src.tar.gz;
+    url = http://heanet.dl.sourceforge.net/sourceforge/tcl/tcl8.4.13-src.tar.gz;
     md5 = "c6b655ad5db095ee73227113220c0523";
   };
 }
diff --git a/pkgs/development/interpreters/xulrunner/default.nix b/pkgs/development/interpreters/xulrunner/default.nix
index 7ba949439471..ee1c87b59361 100644
--- a/pkgs/development/interpreters/xulrunner/default.nix
+++ b/pkgs/development/interpreters/xulrunner/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xulrunner-1.8.0.4-source.tar.bz2;
+    url = http://releases.mozilla.org/pub/mozilla.org/xulrunner/releases/1.8.0.4/source/xulrunner-1.8.0.4-source.tar.bz2;
     md5 = "4dc09831aa4e94fda5182a4897ed08e9";
   };
 
diff --git a/pkgs/development/libraries/SDL/default.nix b/pkgs/development/libraries/SDL/default.nix
index fe6820ba149a..a74a1590113c 100644
--- a/pkgs/development/libraries/SDL/default.nix
+++ b/pkgs/development/libraries/SDL/default.nix
@@ -8,7 +8,7 @@ assert alsaSupport -> alsaLib != null;
 stdenv.mkDerivation {
   name = "SDL-1.2.11";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/SDL-1.2.11.tar.gz;
+    url = http://www.libsdl.org/release/SDL-1.2.11.tar.gz;
     md5 = "418b42956b7cd103bfab1b9077ccc149";
   };
   propagatedBuildInputs = [x11 libXrandr];
diff --git a/pkgs/development/libraries/SDL_mixer/default.nix b/pkgs/development/libraries/SDL_mixer/default.nix
index f60d188886b3..14b8359c70a4 100644
--- a/pkgs/development/libraries/SDL_mixer/default.nix
+++ b/pkgs/development/libraries/SDL_mixer/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "SDL_mixer-1.2.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/SDL_mixer-1.2.7.tar.gz;
+    url = http://www.libsdl.org/projects/SDL_mixer/release/SDL_mixer-1.2.7.tar.gz;
     md5 = "7959b89c8f8f1564ca90968f6c88fa1e";
   };
   buildInputs = [SDL libogg libvorbis];
diff --git a/pkgs/development/libraries/Xaw3d/default.nix b/pkgs/development/libraries/Xaw3d/default.nix
index da99571a82ad..a0603b546cf6 100644
--- a/pkgs/development/libraries/Xaw3d/default.nix
+++ b/pkgs/development/libraries/Xaw3d/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "Xaw3d-1.5E";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/Xaw3d-1.5E.tar.gz;
+    url = http://freshmeat.net/redir/xaw3d/11835/url_tgz/Xaw3d-1.5E.tar.gz;
     md5 = "29ecfdcd6bcf47f62ecfd672d31269a1";
   };
   patches = [./config.patch ./laylex.patch];
diff --git a/pkgs/development/libraries/a52dec/default.nix b/pkgs/development/libraries/a52dec/default.nix
index 45a0038c5897..4a75e11ec304 100644
--- a/pkgs/development/libraries/a52dec/default.nix
+++ b/pkgs/development/libraries/a52dec/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "a52dec-0.7.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/a52dec-0.7.4.tar.gz;
+    url = http://liba52.sourceforge.net/files/a52dec-0.7.4.tar.gz;
     md5 = "caa9f5bc44232dc8aeea773fea56be80";
   };
 }
diff --git a/pkgs/development/libraries/aalib/default.nix b/pkgs/development/libraries/aalib/default.nix
index b06db7eb39d7..5f138ef729af 100644
--- a/pkgs/development/libraries/aalib/default.nix
+++ b/pkgs/development/libraries/aalib/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "aalib-1.4rc4";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/aalib-1.4rc4.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/aa-project/aalib-1.4rc4.tar.gz;
     md5 = "d5aa8e9eae07b7441298b5c30490f6a6";
   };
   buildInputs = [ncurses];
diff --git a/pkgs/development/libraries/apr-util/default.nix b/pkgs/development/libraries/apr-util/default.nix
index 5dd4292bcaf2..7f2ce3e3882a 100644
--- a/pkgs/development/libraries/apr-util/default.nix
+++ b/pkgs/development/libraries/apr-util/default.nix
@@ -7,7 +7,7 @@ assert bdbSupport -> db4 != null;
 (stdenv.mkDerivation {
   name = "apr-util-1.2.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/apr-util-1.2.7.tar.bz2;
+    url = http://archive.apache.org/dist/apr/apr-util-1.2.7.tar.bz2;
     md5 = "a4c527f08ae2298e62a88472291bf066";
   };
   configureFlags = "
diff --git a/pkgs/development/libraries/apr/default.nix b/pkgs/development/libraries/apr/default.nix
index 976774b91f9e..a42699063c50 100644
--- a/pkgs/development/libraries/apr/default.nix
+++ b/pkgs/development/libraries/apr/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "apr-1.2.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/apr-1.2.7.tar.bz2;
+    url = http://archive.apache.org/dist/apr/apr-1.2.7.tar.bz2;
     md5 = "e77887dbafc515c63feac84686bcb3bc";
   };
 }
diff --git a/pkgs/development/libraries/attr/default.nix b/pkgs/development/libraries/attr/default.nix
index 69a097b0c8bc..79da04d486ad 100644
--- a/pkgs/development/libraries/attr/default.nix
+++ b/pkgs/development/libraries/attr/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/attr_2.4.32-1.tar.gz;
+    url = ftp://oss.sgi.com/projects/xfs/download/download/cmd_tars/attr_2.4.32-1.tar.gz;
     md5 = "092739e9b944815aecc1f5d8379d5ea5";
   };
 
diff --git a/pkgs/development/libraries/audiofile/default.nix b/pkgs/development/libraries/audiofile/default.nix
index f0156d45e3b3..a10ec7a95c3e 100644
--- a/pkgs/development/libraries/audiofile/default.nix
+++ b/pkgs/development/libraries/audiofile/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "audiofile-0.2.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/audiofile-0.2.5.tar.gz;
+    url = http://www.68k.org/~michael/audiofile/audiofile-0.2.5.tar.gz;
     md5 = "fd07c62a17ceafa317929e55e51e26c5";
   };
 }
diff --git a/pkgs/development/libraries/beecrypt/default.nix b/pkgs/development/libraries/beecrypt/default.nix
index d6fa6227285d..6d8e776ce80c 100644
--- a/pkgs/development/libraries/beecrypt/default.nix
+++ b/pkgs/development/libraries/beecrypt/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "beecrypt-4.1.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/beecrypt-4.1.2.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/beecrypt/beecrypt-4.1.2.tar.gz;
     md5 = "820d26437843ab0a6a8a5151a73a657c";
   };
   buildInputs = [m4];
diff --git a/pkgs/development/libraries/bluez-libs/default.nix b/pkgs/development/libraries/bluez-libs/default.nix
index f5e51ed8b793..20cfa41f365b 100644
--- a/pkgs/development/libraries/bluez-libs/default.nix
+++ b/pkgs/development/libraries/bluez-libs/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "bluez-libs-2.25";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bluez-libs-2.25.tar.gz;
+    url = http://bluez.sf.net/download/bluez-libs-2.25.tar.gz;
     md5 = "ebc8408c9a74c785786a2ef7185fe628";
   };
 }
diff --git a/pkgs/development/libraries/boehm-gc/default.nix b/pkgs/development/libraries/boehm-gc/default.nix
index 67ec05241dba..d46b1fe70161 100644
--- a/pkgs/development/libraries/boehm-gc/default.nix
+++ b/pkgs/development/libraries/boehm-gc/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "boehm-gc-6.8";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gc6.8.tar.gz;
+    url = http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/gc6.8.tar.gz;
     md5 = "418d38bd9c66398386a372ec0435250e";
   };
 }
diff --git a/pkgs/development/libraries/chmlib/default.nix b/pkgs/development/libraries/chmlib/default.nix
index 412186f54c72..096f2e0e2295 100644
--- a/pkgs/development/libraries/chmlib/default.nix
+++ b/pkgs/development/libraries/chmlib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "chmlib-0.38";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/chmlib-0.38.tar.bz2;
+    url = http://66.93.236.84/~jedwin/projects/chmlib/chmlib-0.38.tar.bz2;
     md5 = "d72661526aaea377ed30e9f58a086964";
   };
 }
diff --git a/pkgs/development/libraries/cil/default.nix b/pkgs/development/libraries/cil/default.nix
index 084d5adf206b..ecbb0c19412b 100644
--- a/pkgs/development/libraries/cil/default.nix
+++ b/pkgs/development/libraries/cil/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl, ocaml, perl}: stdenv.mkDerivation {
   name = "cil-1.3.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cil-1.3.2.tar.gz;
+    url = http://manju.cs.berkeley.edu/cil/distrib/cil-1.3.2.tar.gz;
     md5 = "aba80dd700fcb1411598670cc36a9573";
   };
   buildInputs = [ocaml perl];
diff --git a/pkgs/development/libraries/clearsilver/default.nix b/pkgs/development/libraries/clearsilver/default.nix
index 1a4c157482dc..c640cb3f2973 100644
--- a/pkgs/development/libraries/clearsilver/default.nix
+++ b/pkgs/development/libraries/clearsilver/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name="clearsilver-0.10.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/clearsilver-0.10.3.tar.gz;
+    url = "http://www.clearsilver.net/downloads/clearsilver-0.10.3.tar.gz";
     md5 = "ff4104b0e58bca1b61d528edbd902769";
   };
   builder = ./builder.sh;
diff --git a/pkgs/development/libraries/coredumper/default.nix b/pkgs/development/libraries/coredumper/default.nix
index 973de918ff4e..9c73b62cb7e4 100644
--- a/pkgs/development/libraries/coredumper/default.nix
+++ b/pkgs/development/libraries/coredumper/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "coredumper-0.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/coredumper-0.2.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/goog-coredumper/coredumper-0.2.tar.gz;
     md5 = "024f8e4afe73c4cc4f4a0b0ef585e9b7";
   };
 }
diff --git a/pkgs/development/libraries/cracklib/default.nix b/pkgs/development/libraries/cracklib/default.nix
index 45e2dd359d96..8d00ac293523 100644
--- a/pkgs/development/libraries/cracklib/default.nix
+++ b/pkgs/development/libraries/cracklib/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "cracklib-2.8.9";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cracklib-2.8.9.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/cracklib/cracklib-2.8.9.tar.gz;
     md5 = "9a8c9eb26b48787c84024ac779f64bb2";
   };
   dicts = fetchurl {
diff --git a/pkgs/development/libraries/dclib/default.nix b/pkgs/development/libraries/dclib/default.nix
index 17fa74fa6a54..f5077b63adb3 100644
--- a/pkgs/development/libraries/dclib/default.nix
+++ b/pkgs/development/libraries/dclib/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "dclib-0.3.7";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/dclib-0.3.7.tar.bz2;
+    url = http://download.berlios.de/dcgui/dclib-0.3.7.tar.bz2;
     md5 = "d35833414534bcac8ce2c8a62ce903a4";
   };
 
diff --git a/pkgs/development/libraries/expat/default.nix b/pkgs/development/libraries/expat/default.nix
index 947da2c5505e..7b53a04fb879 100644
--- a/pkgs/development/libraries/expat/default.nix
+++ b/pkgs/development/libraries/expat/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl}: stdenv.mkDerivation {
   name = "expat-2.0.0";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/expat-2.0.0.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/expat/expat-2.0.0.tar.gz;
     md5 = "d945df7f1c0868c5c73cf66ba9596f3f";
   };
 }
diff --git a/pkgs/development/libraries/ffmpeg/default.nix b/pkgs/development/libraries/ffmpeg/default.nix
index 8d6a5fdad31e..6aec8ecbb063 100644
--- a/pkgs/development/libraries/ffmpeg/default.nix
+++ b/pkgs/development/libraries/ffmpeg/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "ffmpeg-20051126";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ffmpeg-20051126.tar.bz2;
+    url = http://downloads.videolan.org/pub/videolan/vlc/0.8.4a/contrib/ffmpeg-20051126.tar.bz2;
     md5 = "f9e50bf9ee1dd248a276bf9bd4d606e0";
   };
   # !!! Hm, what are the legal consequences of --enable-gpl?
diff --git a/pkgs/development/libraries/fribidi/default.nix b/pkgs/development/libraries/fribidi/default.nix
index b55b89912ca9..a9394e00da4a 100644
--- a/pkgs/development/libraries/fribidi/default.nix
+++ b/pkgs/development/libraries/fribidi/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "fribidi-0.10.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/fribidi-0.10.7.tar.gz;
+    url = http://fribidi.org/download/fribidi-0.10.7.tar.gz;
     md5 = "0f602ed32869dbc551dc6bc83d8a3d28";
   };
 }
diff --git a/pkgs/development/libraries/gettext/gettext-0.14.6.nix b/pkgs/development/libraries/gettext/gettext-0.14.6.nix
index 9feadd615bb9..21961673aaa2 100644
--- a/pkgs/development/libraries/gettext/gettext-0.14.6.nix
+++ b/pkgs/development/libraries/gettext/gettext-0.14.6.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl}: stdenv.mkDerivation {
   name = "gettext-0.14.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gettext-0.14.6.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/gettext/gettext-0.14.6.tar.gz;
     md5 = "c26fc7f0a493c5c7c39bbc4e7ed42790";
   };
   configureFlags = "--disable-csharp";
diff --git a/pkgs/development/libraries/gettext/gettext-0.15.nix b/pkgs/development/libraries/gettext/gettext-0.15.nix
index 9db6eeba5639..dfa95a164a23 100644
--- a/pkgs/development/libraries/gettext/gettext-0.15.nix
+++ b/pkgs/development/libraries/gettext/gettext-0.15.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl}: stdenv.mkDerivation {
   name = "gettext-0.15";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gettext-0.15.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/gettext/gettext-0.15.tar.gz;
     md5 = "16bc6e4d37ac3d07495f737a2349a22b";
   };
   configureFlags = "--disable-csharp";
diff --git a/pkgs/development/libraries/gmime/default.nix b/pkgs/development/libraries/gmime/default.nix
index 3c53862c5d74..22facd2ccfca 100644
--- a/pkgs/development/libraries/gmime/default.nix
+++ b/pkgs/development/libraries/gmime/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gmime-2.2.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gmime-2.2.1.tar.gz;
+    url = http://spruce.sourceforge.net/gmime/sources/v2.2/gmime-2.2.1.tar.gz;
     md5 = "b05e4d6344c8465fb74386e5f1fed45c";
   };
   buildInputs = [pkgconfig glib zlib];
diff --git a/pkgs/development/libraries/gnet/default.nix b/pkgs/development/libraries/gnet/default.nix
index 3be9a0a2573c..f294889dd327 100644
--- a/pkgs/development/libraries/gnet/default.nix
+++ b/pkgs/development/libraries/gnet/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && glib != null;
 stdenv.mkDerivation {
   name = "gnet-2.0.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gnet-2.0.7.tar.gz;
+    url = http://www.gnetlibrary.org/src/gnet-2.0.7.tar.gz;
     md5 = "3a7a40411775688fe4c42141ab007048";
   };
   buildInputs = [pkgconfig glib];
diff --git a/pkgs/development/libraries/gtk-libs-1.x/gdk-pixbuf/default.nix b/pkgs/development/libraries/gtk-libs-1.x/gdk-pixbuf/default.nix
index 08f60ceede74..4e28a78930fc 100644
--- a/pkgs/development/libraries/gtk-libs-1.x/gdk-pixbuf/default.nix
+++ b/pkgs/development/libraries/gtk-libs-1.x/gdk-pixbuf/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "gdk-pixbuf-0.22.0";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gdk-pixbuf-0.22.0.tar.bz2;
+    url = ftp://ftp.gnome.org/pub/gnome/sources/gdk-pixbuf/0.22/gdk-pixbuf-0.22.0.tar.bz2;
     md5 = "05fcb68ceaa338614ab650c775efc2f2";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-1.x/glib/default.nix b/pkgs/development/libraries/gtk-libs-1.x/glib/default.nix
index 07fa0dc28fb8..8aa5005b6171 100644
--- a/pkgs/development/libraries/gtk-libs-1.x/glib/default.nix
+++ b/pkgs/development/libraries/gtk-libs-1.x/glib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "glib-1.2.10";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glib-1.2.10.tar.gz;
+    url = ftp://ftp.gtk.org/pub/gtk/v1.2/glib-1.2.10.tar.gz;
     md5 = "6fe30dad87c77b91b632def29dd69ef9";
   };
   # Patch for gcc 3.4 compatibility.  Based on
diff --git a/pkgs/development/libraries/gtk-libs-1.x/gtk+/default.nix b/pkgs/development/libraries/gtk-libs-1.x/gtk+/default.nix
index 49c8625d0441..7762ee57b77e 100644
--- a/pkgs/development/libraries/gtk-libs-1.x/gtk+/default.nix
+++ b/pkgs/development/libraries/gtk-libs-1.x/gtk+/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk+-1.2.10.tar.gz;
+    url = ftp://ftp.gtk.org/pub/gtk/v1.2/gtk+-1.2.10.tar.gz;
     md5 = "4d5cb2fc7fb7830e4af9747a36bfce20";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-2.2/atk/default.nix b/pkgs/development/libraries/gtk-libs-2.2/atk/default.nix
index d3ebdab0c357..1089f571099e 100644
--- a/pkgs/development/libraries/gtk-libs-2.2/atk/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.2/atk/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && glib != null && perl != null;
 stdenv.mkDerivation {
   name = "atk-1.2.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/atk-1.2.4.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.2/atk-1.2.4.tar.bz2;
     md5 = "2d6d50df31abe0e8892b5d3e7676a02d";
   };
   buildInputs = [pkgconfig perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.2/glib/default.nix b/pkgs/development/libraries/gtk-libs-2.2/glib/default.nix
index ebd5956e69c9..22d01d0d86f6 100644
--- a/pkgs/development/libraries/gtk-libs-2.2/glib/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.2/glib/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && gettext != null && perl != null;
 stdenv.mkDerivation {
   name = "glib-2.2.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glib-2.2.3.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.2/glib-2.2.3.tar.bz2;
     md5 = "aa214a10d873b68ddd67cd9de2ccae55";
   };
   buildInputs = [pkgconfig gettext perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.2/gtk+/default.nix b/pkgs/development/libraries/gtk-libs-2.2/gtk+/default.nix
index a5780612f3fa..e1eef8058035 100644
--- a/pkgs/development/libraries/gtk-libs-2.2/gtk+/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.2/gtk+/default.nix
@@ -12,7 +12,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "gtk+-2.2.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk+-2.2.4.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.2/gtk+-2.2.4.tar.bz2;
     md5 = "605332199533e73bc6eec481fb4f1671";
   };
   buildInputs = [pkgconfig perl libtiff libjpeg libpng];
diff --git a/pkgs/development/libraries/gtk-libs-2.2/pango/default.nix b/pkgs/development/libraries/gtk-libs-2.2/pango/default.nix
index 4457f2912a17..5d5e5184dda7 100644
--- a/pkgs/development/libraries/gtk-libs-2.2/pango/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.2/pango/default.nix
@@ -6,7 +6,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "pango-1.2.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pango-1.2.5.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.2/pango-1.2.5.tar.bz2;
     md5 = "df00fe3e71cd297010f24f439b6c8ee6";
   };
   buildInputs = [pkgconfig];
diff --git a/pkgs/development/libraries/gtk-libs-2.4/atk/default.nix b/pkgs/development/libraries/gtk-libs-2.4/atk/default.nix
index af46b511e1e0..095ff32b2aa1 100644
--- a/pkgs/development/libraries/gtk-libs-2.4/atk/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.4/atk/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && glib != null && perl != null;
 stdenv.mkDerivation {
   name = "atk-1.6.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/atk-1.6.1.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.4/atk-1.6.1.tar.bz2;
     md5 = "f77be7e128c957bd3056c2e270b5f283";
   };
   buildInputs = [pkgconfig perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.4/glib/default.nix b/pkgs/development/libraries/gtk-libs-2.4/glib/default.nix
index 2dad864c936c..58f91b3f83c5 100644
--- a/pkgs/development/libraries/gtk-libs-2.4/glib/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.4/glib/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && gettext != null && perl != null;
 stdenv.mkDerivation {
   name = "glib-2.4.7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glib-2.4.7.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.4/glib-2.4.7.tar.bz2;
     md5 = "eff6fec89455addf8b0dee5a19e343be";
   };
   buildInputs = [pkgconfig gettext perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.4/gtk+/default.nix b/pkgs/development/libraries/gtk-libs-2.4/gtk+/default.nix
index 9c92dcfce290..56a6e41e7311 100644
--- a/pkgs/development/libraries/gtk-libs-2.4/gtk+/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.4/gtk+/default.nix
@@ -12,7 +12,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "gtk+-2.4.13";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk+-2.4.13.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.4/gtk+-2.4.13.tar.bz2;
     md5 = "3a438e1010704b11acaf060c9ba0fd7b";
   };
   buildInputs = [pkgconfig perl libtiff libjpeg libpng];
diff --git a/pkgs/development/libraries/gtk-libs-2.4/pango/default.nix b/pkgs/development/libraries/gtk-libs-2.4/pango/default.nix
index bfd1e0be546b..986891b98b97 100644
--- a/pkgs/development/libraries/gtk-libs-2.4/pango/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.4/pango/default.nix
@@ -6,7 +6,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "pango-1.4.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pango-1.4.1.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.4/pango-1.4.1.tar.bz2;
     md5 = "39868e0da250fd4c00b2970e4eb84389";
   };
   buildInputs = [pkgconfig];
diff --git a/pkgs/development/libraries/gtk-libs-2.6/glib/default.nix b/pkgs/development/libraries/gtk-libs-2.6/glib/default.nix
index 5857fa185f3e..1dc3407a76e8 100644
--- a/pkgs/development/libraries/gtk-libs-2.6/glib/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.6/glib/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && gettext != null && perl != null;
 stdenv.mkDerivation {
   name = "glib-2.6.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glib-2.6.6.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.6/glib-2.6.6.tar.bz2;
     md5 = "6e22b0639d314536f23ee118f29b43de";
   };
   buildInputs = [pkgconfig gettext perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.6/glibmm/default.nix b/pkgs/development/libraries/gtk-libs-2.6/glibmm/default.nix
index 5669a13172d0..957c596fc7b1 100644
--- a/pkgs/development/libraries/gtk-libs-2.6/glibmm/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.6/glibmm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "glibmm-2.6.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glibmm-2.6.1.tar.bz2;
+    url = http://ftp.gnome.org/pub/GNOME/sources/glibmm/2.6/glibmm-2.6.1.tar.bz2;
     md5 = "e37da352bf581503c5866f0231fd4a74";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-2.6/gtk+/default.nix b/pkgs/development/libraries/gtk-libs-2.6/gtk+/default.nix
index a76303a758bf..06e37f070da2 100644
--- a/pkgs/development/libraries/gtk-libs-2.6/gtk+/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.6/gtk+/default.nix
@@ -12,7 +12,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "gtk+-2.6.10";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk+-2.6.10.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.6/gtk+-2.6.10.tar.bz2;
     md5 = "520090ef291e35ba93397060e20f5025";
   };
   buildInputs = [pkgconfig perl libtiff libjpeg libpng];
diff --git a/pkgs/development/libraries/gtk-libs-2.6/gtkmm/default.nix b/pkgs/development/libraries/gtk-libs-2.6/gtkmm/default.nix
index 7df2339f4aee..ebc1e881c471 100644
--- a/pkgs/development/libraries/gtk-libs-2.6/gtkmm/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.6/gtkmm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gtkmm-2.6.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtkmm-2.6.4.tar.bz2;
+    url = http://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.6/gtkmm-2.6.4.tar.bz2;
     md5 = "f71d1c4a89c4f9e054400f12a82dec5f";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-2.6/pango/default.nix b/pkgs/development/libraries/gtk-libs-2.6/pango/default.nix
index 837f9ad86af8..6b9391e0a0b1 100644
--- a/pkgs/development/libraries/gtk-libs-2.6/pango/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.6/pango/default.nix
@@ -6,7 +6,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "pango-1.8.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pango-1.8.2.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.6/pango-1.8.2.tar.bz2;
     md5 = "f5b5da7a173f0566d8217ec112fde993";
   };
   buildInputs = [pkgconfig];
diff --git a/pkgs/development/libraries/gtk-libs-2.8/atk/default.nix b/pkgs/development/libraries/gtk-libs-2.8/atk/default.nix
index a3c80d6d301e..075375675203 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/atk/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/atk/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && glib != null && perl != null;
 stdenv.mkDerivation {
   name = "atk-1.10.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/atk-1.10.3.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.8/atk-1.10.3.tar.bz2;
     md5 = "c84a01fea567b365c0d44b227fead948";
   };
   buildInputs = [pkgconfig perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.8/glib/default.nix b/pkgs/development/libraries/gtk-libs-2.8/glib/default.nix
index 1c82f63cafa7..f73a1f388f4e 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/glib/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/glib/default.nix
@@ -5,7 +5,7 @@ assert pkgconfig != null && gettext != null && perl != null;
 stdenv.mkDerivation {
   name = "glib-2.10.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glib-2.10.3.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/glib/2.10/glib-2.10.3.tar.bz2;
     md5 = "87206e721c12d185d17dd9ecd7e30369";
   };
   buildInputs = [pkgconfig perl];
diff --git a/pkgs/development/libraries/gtk-libs-2.8/glibmm/default.nix b/pkgs/development/libraries/gtk-libs-2.8/glibmm/default.nix
index 5669a13172d0..957c596fc7b1 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/glibmm/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/glibmm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "glibmm-2.6.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/glibmm-2.6.1.tar.bz2;
+    url = http://ftp.gnome.org/pub/GNOME/sources/glibmm/2.6/glibmm-2.6.1.tar.bz2;
     md5 = "e37da352bf581503c5866f0231fd4a74";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-2.8/gtk+/default.nix b/pkgs/development/libraries/gtk-libs-2.8/gtk+/default.nix
index 82c729802a03..c5a012d9baaa 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/gtk+/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/gtk+/default.nix
@@ -10,7 +10,7 @@ assert xineramaSupport -> libXinerama != null;
 stdenv.mkDerivation {
   name = "gtk+-2.8.20";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk+-2.8.20.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/gtk/v2.8/gtk+-2.8.20.tar.bz2;
     md5 = "74e7ca98194f1fadfe906e66d763d05d";
   };
   buildInputs = [
diff --git a/pkgs/development/libraries/gtk-libs-2.8/gtkmm/default.nix b/pkgs/development/libraries/gtk-libs-2.8/gtkmm/default.nix
index 7df2339f4aee..ebc1e881c471 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/gtkmm/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/gtkmm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gtkmm-2.6.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtkmm-2.6.4.tar.bz2;
+    url = http://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.6/gtkmm-2.6.4.tar.bz2;
     md5 = "f71d1c4a89c4f9e054400f12a82dec5f";
   };
 
diff --git a/pkgs/development/libraries/gtk-libs-2.8/pango/default.nix b/pkgs/development/libraries/gtk-libs-2.8/pango/default.nix
index 977f9eb1498b..9e3296e00a1c 100644
--- a/pkgs/development/libraries/gtk-libs-2.8/pango/default.nix
+++ b/pkgs/development/libraries/gtk-libs-2.8/pango/default.nix
@@ -5,7 +5,7 @@ assert x11.buildClientLibs;
 stdenv.mkDerivation {
   name = "pango-1.12.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pango-1.12.4.tar.bz2;
+    url = ftp://ftp.gtk.org/pub/pango/1.12/pango-1.12.4.tar.bz2;
     md5 = "8f6749fe961e41dbeed72d1efcd55224";
   };
   buildInputs = [pkgconfig];
diff --git a/pkgs/development/libraries/id3lib/default.nix b/pkgs/development/libraries/id3lib/default.nix
index b774396a5571..a351da592e12 100644
--- a/pkgs/development/libraries/id3lib/default.nix
+++ b/pkgs/development/libraries/id3lib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "id3lib-3.8.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/id3lib-3.8.3.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/id3lib/id3lib-3.8.3.tar.gz;
     md5 = "19f27ddd2dda4b2d26a559a4f0f402a7";
   };
   configureFlags = "--disable-static";
diff --git a/pkgs/development/libraries/java/aterm/default.nix b/pkgs/development/libraries/java/aterm/default.nix
index 35b6ea258ed2..5a3f735b43aa 100644
--- a/pkgs/development/libraries/java/aterm/default.nix
+++ b/pkgs/development/libraries/java/aterm/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "aterm-java-1.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/aterm-java-1.6.tar.gz;
+    url = http://www.cwi.nl/projects/MetaEnv/aterm-java/aterm-java-1.6.tar.gz;
     md5 = "abf475dae2f5efca865fcdff871feb5e";
   };
   buildInputs = [stdenv jdk sharedobjects jjtraveler];
diff --git a/pkgs/development/libraries/java/cup/default.nix b/pkgs/development/libraries/java/cup/default.nix
index adee415651b7..1181cef074ec 100644
--- a/pkgs/development/libraries/java/cup/default.nix
+++ b/pkgs/development/libraries/java/cup/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/java_cup_v10k.tar.gz;
+    url = http://www.cs.princeton.edu/~appel/modern/java/CUP/java_cup_v10k.tar.gz;
     md5 = "8b11edfec13c590ea443d0f0ae0da479";
   };
 
diff --git a/pkgs/development/libraries/java/httpunit/default.nix b/pkgs/development/libraries/java/httpunit/default.nix
index 55f0483720ab..67baff53d427 100644
--- a/pkgs/development/libraries/java/httpunit/default.nix
+++ b/pkgs/development/libraries/java/httpunit/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/httpunit-1.6.zip;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/httpunit/httpunit-1.6.zip;
     md5 = "e94b53b9f4d7bdb706e4baac95b6e424";
   };
 
diff --git a/pkgs/development/libraries/java/jakarta-commons/file-upload/default.nix b/pkgs/development/libraries/java/jakarta-commons/file-upload/default.nix
index 4f6f2a7109ee..a609532f2825 100644
--- a/pkgs/development/libraries/java/jakarta-commons/file-upload/default.nix
+++ b/pkgs/development/libraries/java/jakarta-commons/file-upload/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/commons-fileupload-1.0.tar.gz;
+    url = http://archive.apache.org/dist/jakarta/commons/fileupload/binaries/commons-fileupload-1.0.tar.gz;
     md5 = "5618b26b1a5c006d7236fb4465e907b6";
   };
 }
\ No newline at end of file
diff --git a/pkgs/development/libraries/java/javasvn/default.nix b/pkgs/development/libraries/java/javasvn/default.nix
index bf3ea40e5dd8..2c43ba7043b1 100644
--- a/pkgs/development/libraries/java/javasvn/default.nix
+++ b/pkgs/development/libraries/java/javasvn/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/org.tmatesoft.svn_1.0.6.standalone.zip;
+    url = http://tmate.org/svn/org.tmatesoft.svn_1.0.6.standalone.zip;
     md5 = "459cae849eceef04cd65fd6fb54affcc";
   };
   
diff --git a/pkgs/development/libraries/java/jdom/default.nix b/pkgs/development/libraries/java/jdom/default.nix
index 8b09a9d6ab1e..bca165bb3246 100644
--- a/pkgs/development/libraries/java/jdom/default.nix
+++ b/pkgs/development/libraries/java/jdom/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jdom-1.0.tar.gz;
+    url = http://www.jdom.org/dist/binary/jdom-1.0.tar.gz;
     md5 = "ce29ecc05d63fdb419737fd00c04c281";
   };
 }
\ No newline at end of file
diff --git a/pkgs/development/libraries/java/jflex/default.nix b/pkgs/development/libraries/java/jflex/default.nix
index bfb8b3f7a03e..4d0eda22c5bb 100644
--- a/pkgs/development/libraries/java/jflex/default.nix
+++ b/pkgs/development/libraries/java/jflex/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jflex-1.4.1.tar.gz;
+    url = http://jflex.de/jflex-1.4.1.tar.gz;
     md5 = "9e4be6e826e6b344e84c0434d6fd4b46";
   };
 }
diff --git a/pkgs/development/libraries/java/jjtraveler/default.nix b/pkgs/development/libraries/java/jjtraveler/default.nix
index 01199f9e22ff..cb359fd94921 100644
--- a/pkgs/development/libraries/java/jjtraveler/default.nix
+++ b/pkgs/development/libraries/java/jjtraveler/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "jjtraveler-0.4.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/JJTraveler-0.4.3.tar.gz;
+    url = http://www.cwi.nl/projects/MetaEnv/jjtraveler/JJTraveler-0.4.3.tar.gz;
     md5 = "35bf801ee61f042513ae88247fe1bf1d";
   };
   buildInputs = [stdenv jdk];
diff --git a/pkgs/development/libraries/java/junit/default.nix b/pkgs/development/libraries/java/junit/default.nix
index ed7969bb3116..84004f973b6d 100644
--- a/pkgs/development/libraries/java/junit/default.nix
+++ b/pkgs/development/libraries/java/junit/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/junit3.8.1.zip;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/junit/junit3.8.1.zip;
     md5 = "5110326e4b7f7497dfa60ede4b626751";
   };
 
diff --git a/pkgs/development/libraries/java/lucene/default.nix b/pkgs/development/libraries/java/lucene/default.nix
index 40ee2c64fc9a..9380591636c9 100644
--- a/pkgs/development/libraries/java/lucene/default.nix
+++ b/pkgs/development/libraries/java/lucene/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/lucene-1.4.1.tar.gz;
+    url = http://cvs.apache.org/dist/jakarta/lucene/v1.4.1/lucene-1.4.1.tar.gz;
     md5 = "656a6f40f5b8f7d2e19453436848bfe8";
   };
 }
\ No newline at end of file
diff --git a/pkgs/development/libraries/java/mockobjects/default.nix b/pkgs/development/libraries/java/mockobjects/default.nix
index ef1970f74e8f..5315cc63f1c6 100644
--- a/pkgs/development/libraries/java/mockobjects/default.nix
+++ b/pkgs/development/libraries/java/mockobjects/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mockobjects-bin-0.09.tar;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/mockobjects/mockobjects-bin-0.09.tar;
     md5 = "a0e11423bd5fcbb6ea65753643ea8852";
   };
 }
diff --git a/pkgs/development/libraries/java/saxon/default.nix b/pkgs/development/libraries/java/saxon/default.nix
index 475f0ac9c9c2..cab9fafdf8dd 100644
--- a/pkgs/development/libraries/java/saxon/default.nix
+++ b/pkgs/development/libraries/java/saxon/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "saxon-6.5.3";
   builder = ./unzip-builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/saxon6_5_3.zip;
+    url = http://belnet.dl.sourceforge.net/sourceforge/saxon/saxon6_5_3.zip;
     md5 = "7b8c7c187473c04d2abdb40d8ddab5c6";
   };
 
diff --git a/pkgs/development/libraries/java/shared-objects/default.nix b/pkgs/development/libraries/java/shared-objects/default.nix
index cc76ca8ac4a4..c0f12248b3c1 100644
--- a/pkgs/development/libraries/java/shared-objects/default.nix
+++ b/pkgs/development/libraries/java/shared-objects/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "shared-objects-1.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/shared-objects-1.4.tar.gz;
+    url = http://www.cwi.nl/projects/MetaEnv/shared-objects/shared-objects-1.4.tar.gz;
     md5 = "c1f2c58bd1a07be32da8a6b89354a11f";
   };
   buildInputs = [stdenv jdk];
diff --git a/pkgs/development/libraries/java/swt/default.nix b/pkgs/development/libraries/java/swt/default.nix
index 196237e15db2..f06f9ff5be9d 100644
--- a/pkgs/development/libraries/java/swt/default.nix
+++ b/pkgs/development/libraries/java/swt/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   # releases of SWT.  So we just grab a binary release and extract
   # "src.zip" from that.
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/swt-3.1.1-gtk-linux-x86.zip;
+    url = http://sunsite.informatik.rwth-aachen.de/eclipse/downloads/drops/R-3.1.1-200509290840/swt-3.1.1-gtk-linux-x86.zip;
     md5 = "23dfe5a4a566439c5f526d9ea3b3db1c";
   };
   
diff --git a/pkgs/development/libraries/java/xalanj/default.nix b/pkgs/development/libraries/java/xalanj/default.nix
index b286d94d6148..af13a5015fd7 100644
--- a/pkgs/development/libraries/java/xalanj/default.nix
+++ b/pkgs/development/libraries/java/xalanj/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "xalanj-2.7.0";
   directory = "xalan-j_2_7_0";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xalan-j_2_7_0-bin-2jars.tar.gz;
+    url = "http://apache.cs.uu.nl/dist/xml/xalan-j/xalan-j_2_7_0-bin-2jars.tar.gz";
     md5 = "4d7b03dcaf2484b5f9685cc4309a9910";
   };
   builder = ./builder.sh;
diff --git a/pkgs/development/libraries/lesstif/default.nix b/pkgs/development/libraries/lesstif/default.nix
index 501224287064..7e26c0e6a227 100644
--- a/pkgs/development/libraries/lesstif/default.nix
+++ b/pkgs/development/libraries/lesstif/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "lesstif-0.95";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/lesstif-0.95.0.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/lesstif/lesstif-0.95.0.tar.bz2;
     md5 = "ab895165c149d7f95843c7584b1c7ad4";
   };
   buildInputs = [x11];
diff --git a/pkgs/development/libraries/libcdaudio/default.nix b/pkgs/development/libraries/libcdaudio/default.nix
index ee328a297f66..10d3b056346a 100644
--- a/pkgs/development/libraries/libcdaudio/default.nix
+++ b/pkgs/development/libraries/libcdaudio/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libcdaudio-0.99.12";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libcdaudio-0.99.12.tar.gz;
+    url = http://optusnet.dl.sourceforge.net/sourceforge/libcdaudio/libcdaudio-0.99.12.tar.gz ;
     md5 = "63b49cf14d53eed31e7a87cca17a3963" ;
   };
 }
diff --git a/pkgs/development/libraries/libdvdcss/default.nix b/pkgs/development/libraries/libdvdcss/default.nix
index d52acf9a83ff..e8e9da175447 100644
--- a/pkgs/development/libraries/libdvdcss/default.nix
+++ b/pkgs/development/libraries/libdvdcss/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libdvdcss-1.2.9";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libdvdcss-1.2.9.tar.bz2;
+    url = http://download.videolan.org/pub/libdvdcss/1.2.9/libdvdcss-1.2.9.tar.bz2;
     md5 = "553383d898826c285afb2ee453b07868";
   };
 }
diff --git a/pkgs/development/libraries/libdvdnav/default.nix b/pkgs/development/libraries/libdvdnav/default.nix
index b3c5ab3ad491..48f990ea9ba6 100644
--- a/pkgs/development/libraries/libdvdnav/default.nix
+++ b/pkgs/development/libraries/libdvdnav/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libdvdnav-20050211";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libdvdnav-20050211.tar.bz2;
+    url = http://downloads.videolan.org/pub/videolan/vlc/0.8.4a/contrib/libdvdnav-20050211.tar.bz2;
     md5 = "e1b1d45c8fdaf6a2dce3078bd3d7047d";
   };
 }
diff --git a/pkgs/development/libraries/libdvdread/default.nix b/pkgs/development/libraries/libdvdread/default.nix
index 2754540a1b23..fd0eee12ae40 100644
--- a/pkgs/development/libraries/libdvdread/default.nix
+++ b/pkgs/development/libraries/libdvdread/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libdvdread-0.9.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libdvdread-0.9.6.tar.gz;
+    url = http://www.dtek.chalmers.se/groups/dvd/dist/libdvdread-0.9.6.tar.gz;
     md5 = "329401b84ad0b00aaccaad58f2fc393c";
   };
   configureFlags = "--with-libdvdcss=${libdvdcss}";
diff --git a/pkgs/development/libraries/libevent/default.nix b/pkgs/development/libraries/libevent/default.nix
index 25734234994b..4402995d587d 100644
--- a/pkgs/development/libraries/libevent/default.nix
+++ b/pkgs/development/libraries/libevent/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "libevent-1.1b";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libevent-1.1b.tar.gz;
+    url = http://monkey.org/~provos/libevent-1.1b.tar.gz;
     md5 = "ec8dac612aa43ed172f300f396fcec49";
   };
 }
diff --git a/pkgs/development/libraries/libgphoto2/default.nix b/pkgs/development/libraries/libgphoto2/default.nix
index 520d0e127a0f..2a3857a735b2 100644
--- a/pkgs/development/libraries/libgphoto2/default.nix
+++ b/pkgs/development/libraries/libgphoto2/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "libgphoto2-2.2.1";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libgphoto2-2.2.1.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/gphoto/libgphoto2-2.2.1.tar.bz2;
     md5 = "69827311733e39fafa9f77bb05e55b77";
   };
   buildInputs = [pkgconfig libusb];
diff --git a/pkgs/development/libraries/libgsf/default.nix b/pkgs/development/libraries/libgsf/default.nix
index a1bff9c11291..41f946e6606c 100644
--- a/pkgs/development/libraries/libgsf/default.nix
+++ b/pkgs/development/libraries/libgsf/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libgsf-1.14.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libgsf-1.14.1.tar.bz2;
+    url = http://ftp.gnome.org/pub/gnome/sources/libgsf/1.14/libgsf-1.14.1.tar.bz2;
     md5 = "00de00b99382d0b7e034e0fffd8951d4";
   };
   buildInputs = [perl perlXMLParser pkgconfig libxml2 glib gettext];
diff --git a/pkgs/development/libraries/libjpeg/default.nix b/pkgs/development/libraries/libjpeg/default.nix
index 0657eddef464..446c451ab687 100644
--- a/pkgs/development/libraries/libjpeg/default.nix
+++ b/pkgs/development/libraries/libjpeg/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "libjpeg-6b";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jpegsrc.v6b.tar.gz;
+    url = http://www.ijg.org/files/jpegsrc.v6b.tar.gz;
     md5 = "dbd5f3b47ed13132f04c685d608a7547";
   };
   inherit libtool;
@@ -12,11 +12,11 @@ stdenv.mkDerivation {
   # Required for building of dynamic libraries on Darwin.
   patches = [
     (fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/patch-ltconfig;
+      url = http://svn.macports.org/repository/macports/trunk/dports/graphics/jpeg/files/patch-ltconfig;
       md5 = "e6725fa4a09aa1de4ca75343fd0f61d5";
     })
     (fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/patch-ltmain.sh;
+      url = http://svn.macports.org/repository/macports/trunk/dports/graphics/jpeg/files/patch-ltmain.sh;
       #md5 = "489986ad8e7a93aef036766b25f321d5";
       md5 = "092a12aeb0c386dd7dae059109d950ba";
     })
diff --git a/pkgs/development/libraries/libmad/default.nix b/pkgs/development/libraries/libmad/default.nix
index 1f9d5ae4b433..6db5bf798d94 100644
--- a/pkgs/development/libraries/libmad/default.nix
+++ b/pkgs/development/libraries/libmad/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libmad-0.15.1b";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libmad-0.15.1b.tar.gz;
+    url = ftp://ftp.mars.org/pub/mpeg/libmad-0.15.1b.tar.gz;
     md5 = "1be543bc30c56fb6bea1d7bf6a64e66c";
   };
 }
diff --git a/pkgs/development/libraries/libmpcdec/default.nix b/pkgs/development/libraries/libmpcdec/default.nix
index e6d34d0720bb..f0742d23229a 100644
--- a/pkgs/development/libraries/libmpcdec/default.nix
+++ b/pkgs/development/libraries/libmpcdec/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libmpcdec-1.2.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libmpcdec-1.2.2.tar.bz2;
+    url = http://files2.musepack.net/source/libmpcdec-1.2.2.tar.bz2;
     md5 = "f14e07285b9b102a806649074c1d779b";
   };
 }
diff --git a/pkgs/development/libraries/libmspack/default.nix b/pkgs/development/libraries/libmspack/default.nix
index 271cc47cda69..1d34b07b2a4c 100644
--- a/pkgs/development/libraries/libmspack/default.nix
+++ b/pkgs/development/libraries/libmspack/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libmspack-0.0.20040308alpha";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libmspack-0.0.20040308alpha.tar.gz;
+    url = http://www.kyz.uklinux.net/downloads/libmspack-0.0.20040308alpha.tar.gz;
     md5 = "4d8e967649df0f6ade83df7da4b7511c";
   };
 }
diff --git a/pkgs/development/libraries/libogg/default.nix b/pkgs/development/libraries/libogg/default.nix
index 19b0edb03c02..50351f66391f 100644
--- a/pkgs/development/libraries/libogg/default.nix
+++ b/pkgs/development/libraries/libogg/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libogg-1.1.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libogg-1.1.3.tar.gz;
+    url = http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz;
     md5 = "eaf7dc6ebbff30975de7527a80831585" ;
   };
 }
diff --git a/pkgs/development/libraries/libsigcxx/default.nix b/pkgs/development/libraries/libsigcxx/default.nix
index 1300893ecc40..ba24763ea187 100644
--- a/pkgs/development/libraries/libsigcxx/default.nix
+++ b/pkgs/development/libraries/libsigcxx/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libsigc++-2.0.16";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libsigc++-2.0.16.tar.gz;
+    url = http://ftp.gnome.org/pub/GNOME/sources/libsigc++/2.0/libsigc++-2.0.16.tar.gz;
     md5 = "49b8c091b1be84d9f9801c4c81cd98b8";
   };
 
diff --git a/pkgs/development/libraries/libsigsegv/default.nix b/pkgs/development/libraries/libsigsegv/default.nix
index 3437299f5d56..67ecfb7abc4a 100644
--- a/pkgs/development/libraries/libsigsegv/default.nix
+++ b/pkgs/development/libraries/libsigsegv/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libsigsegv-2.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libsigsegv-2.1.tar.gz;
+    url = ftp://ftp.gnu.org/pub/gnu/libsigsegv/libsigsegv-2.1.tar.gz;
     md5 = "6d75ca3fede5fbfd72a78bc918d9e174";
   };
 }
diff --git a/pkgs/development/libraries/libsndfile/default.nix b/pkgs/development/libraries/libsndfile/default.nix
index 4d004c1e3064..7998606a2fa3 100644
--- a/pkgs/development/libraries/libsndfile/default.nix
+++ b/pkgs/development/libraries/libsndfile/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libsndfile-1.0.12";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libsndfile-1.0.12.tar.gz;
+    url = http://www.mega-nerd.com/libsndfile/libsndfile-1.0.12.tar.gz;
     md5 = "03718b7b225b298f41c19620b8906108";
   };
 }
diff --git a/pkgs/development/libraries/libtheora/default.nix b/pkgs/development/libraries/libtheora/default.nix
index cd26c33928a6..f0c637d0f239 100644
--- a/pkgs/development/libraries/libtheora/default.nix
+++ b/pkgs/development/libraries/libtheora/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libtheora-1.0alpha7";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libtheora-1.0alpha7.tar.bz2;
+    url = http://downloads.xiph.org/releases/theora/libtheora-1.0alpha7.tar.bz2;
     md5 = "1bc851e39e4b16977131d5e5f769f48b";
   };
   propagatedBuildInputs = [libogg libvorbis];
diff --git a/pkgs/development/libraries/libtiff/default.nix b/pkgs/development/libraries/libtiff/default.nix
index 496035ea08e6..3a47356d1de5 100644
--- a/pkgs/development/libraries/libtiff/default.nix
+++ b/pkgs/development/libraries/libtiff/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "libtiff-3.8.2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tiff-3.8.2.tar.gz;
+    url = ftp://ftp.remotesensing.org/pub/libtiff/tiff-3.8.2.tar.gz;
     md5 = "fbb6f446ea4ed18955e2714934e5b698";
   };
   propagatedBuildInputs = [zlib libjpeg];
diff --git a/pkgs/development/libraries/libungif/default.nix b/pkgs/development/libraries/libungif/default.nix
index ab651e486c94..6ca8679ad30d 100644
--- a/pkgs/development/libraries/libungif/default.nix
+++ b/pkgs/development/libraries/libungif/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libungif-4.1.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libungif-4.1.4.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/libungif/libungif-4.1.4.tar.gz;
     md5 = "efdfcf8e32e35740288a8c5625a70ccb";
   };
 }
diff --git a/pkgs/development/libraries/libusb/default.nix b/pkgs/development/libraries/libusb/default.nix
index f1414dee9c7a..a4f2fcf5ec50 100644
--- a/pkgs/development/libraries/libusb/default.nix
+++ b/pkgs/development/libraries/libusb/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libusb-0.1.12";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libusb-0.1.12.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/libusb/libusb-0.1.12.tar.gz;
     md5 = "caf182cbc7565dac0fd72155919672e6";
   };
 }
diff --git a/pkgs/development/libraries/libvorbis/default.nix b/pkgs/development/libraries/libvorbis/default.nix
index 3bc452448fae..cdcee8149173 100644
--- a/pkgs/development/libraries/libvorbis/default.nix
+++ b/pkgs/development/libraries/libvorbis/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libvorbis-1.1.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libvorbis-1.1.2.tar.gz;
+    url = http://downloads.xiph.org/releases/vorbis/libvorbis-1.1.2.tar.gz;
     md5 = "37847626b8e1b53ae79a34714c7b3211";
   };
   buildInputs = [libogg];
diff --git a/pkgs/development/libraries/libwpd/default.nix b/pkgs/development/libraries/libwpd/default.nix
index 1e42f0e8594e..20a1b769b644 100644
--- a/pkgs/development/libraries/libwpd/default.nix
+++ b/pkgs/development/libraries/libwpd/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libwpd-0.8.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libwpd-0.8.5.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/libwpd/libwpd-0.8.5.tar.gz;
     md5 = "6b679e205a2805c3d23f41c65b35e266";
   };
   buildInputs = [pkgconfig glib libgsf libxml2];
diff --git a/pkgs/development/libraries/mpeg2dec/default.nix b/pkgs/development/libraries/mpeg2dec/default.nix
index dd16c18ed1b2..7ee4236296d8 100644
--- a/pkgs/development/libraries/mpeg2dec/default.nix
+++ b/pkgs/development/libraries/mpeg2dec/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "mpeg2dec-20050802";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mpeg2dec-20050802.tar.gz;
+    url = ftp://ftp.u-strasbg.fr/pub/videolan/vlc/0.8.4a/contrib/mpeg2dec-20050802.tar.gz;
     md5 = "79b3559a9354085fcebb1460dd93d237";
   };
 }
diff --git a/pkgs/development/libraries/mysql-connector-odbc/default.nix b/pkgs/development/libraries/mysql-connector-odbc/default.nix
index cfa1fe616a4c..47c14a4d793d 100644
--- a/pkgs/development/libraries/mysql-connector-odbc/default.nix
+++ b/pkgs/development/libraries/mysql-connector-odbc/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "mysql-connector-odbc-3.51.12";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mysql-connector-odbc-3.51.12.tar.gz;
+    url = http://ftp.snt.utwente.nl/pub/software/mysql/Downloads/MyODBC3/mysql-connector-odbc-3.51.12.tar.gz;
     md5 = "a484f590464fb823a8f821b2f1fd7fef";
   };
   configureFlags = "--disable-gui";
diff --git a/pkgs/development/libraries/ncurses-diet/default.nix b/pkgs/development/libraries/ncurses-diet/default.nix
index 3dd61f534727..64dc016d4788 100644
--- a/pkgs/development/libraries/ncurses-diet/default.nix
+++ b/pkgs/development/libraries/ncurses-diet/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ncurses-5.5";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ncurses-5.5.tar.gz;
+    url = http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.5.tar.gz;
     md5 = "e73c1ac10b4bfc46db43b2ddfd6244ef";
   };
 }
diff --git a/pkgs/development/libraries/nss/default.nix b/pkgs/development/libraries/nss/default.nix
index 9528197adf6f..cd966cc1121c 100644
--- a/pkgs/development/libraries/nss/default.nix
+++ b/pkgs/development/libraries/nss/default.nix
@@ -5,12 +5,12 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   nsssrc = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/nss-3.10.tar.gz;
+    url = ftp://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/NSS_3_10_RTM/src/nss-3.10.tar.gz;
     md5 = "f0d75d52aff21f88d9c055bdb78f54f8";
   };
 
   nsprsrc =  fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/nspr-4.6.tar.gz;
+    url = ftp://ftp.mozilla.org/pub/mozilla.org/nspr/releases/v4.6/src/nspr-4.6.tar.gz;
     md5 = "a37c3cde875502e05576429312452465";
   };
 
diff --git a/pkgs/development/libraries/openal/default.nix b/pkgs/development/libraries/openal/default.nix
index 2afdd9714bfc..887a668b4e6b 100644
--- a/pkgs/development/libraries/openal/default.nix
+++ b/pkgs/development/libraries/openal/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "openal-0.0.8";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/openal-0.0.8.tar.gz;
+    url = http://www.openal.org/openal_webstf/downloads/openal-0.0.8.tar.gz;
     md5 = "0379bd39fc84454491ef38434a2e6e8d";
   };
   # Note: the autoconf/automake dependency can go once the Automake
diff --git a/pkgs/development/libraries/openexr/default.nix b/pkgs/development/libraries/openexr/default.nix
index 421f7d2331ac..17acebe7489f 100644
--- a/pkgs/development/libraries/openexr/default.nix
+++ b/pkgs/development/libraries/openexr/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "openexr-1.2.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/OpenEXR-1.2.2.tar.gz;
+    url = http://savannah.nongnu.org/download/openexr/OpenEXR-1.2.2.tar.gz;
     md5 = "a2e56af78dc47c7294ff188c8f78394b";
   };
   buildInputs = [zlib];
diff --git a/pkgs/development/libraries/pangoxsl/default.nix b/pkgs/development/libraries/pangoxsl/default.nix
index ae801fc7bdc2..84467a935f36 100644
--- a/pkgs/development/libraries/pangoxsl/default.nix
+++ b/pkgs/development/libraries/pangoxsl/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "pangoxsl-1.6.0.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pangoxsl-1.6.0.3.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/pangopdf/pangoxsl-1.6.0.3.tar.gz;
     md5 = "c98bad47ffa7de2e946a8e35d45e071c";
   };
 
diff --git a/pkgs/development/libraries/readline/readline4.nix b/pkgs/development/libraries/readline/readline4.nix
index e87f8199b795..dadf2c1a7727 100644
--- a/pkgs/development/libraries/readline/readline4.nix
+++ b/pkgs/development/libraries/readline/readline4.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "readline-4.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/readline-4.3.tar.gz;
+    url = http://ftp.gnu.org/pub/gnu/readline/readline-4.3.tar.gz;
     md5 = "f86f7cb717ab321fe15f1bbcb058c11e";
   };
   propagatedBuildInputs = [ncurses];
diff --git a/pkgs/development/libraries/rte/default.nix b/pkgs/development/libraries/rte/default.nix
index 07d0a7649a19..94067f71fd0f 100644
--- a/pkgs/development/libraries/rte/default.nix
+++ b/pkgs/development/libraries/rte/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "rte-0.5.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/rte-0.5.6.tar.bz2;
+    url = http://heanet.dl.sourceforge.net/sourceforge/zapping/rte-0.5.6.tar.bz2;
     md5 = "6259cdff255af71c23a4576e7c5664a0";
   };
 }
diff --git a/pkgs/development/libraries/slang/default.nix b/pkgs/development/libraries/slang/default.nix
index b6e67ae5c995..4b221a185832 100644
--- a/pkgs/development/libraries/slang/default.nix
+++ b/pkgs/development/libraries/slang/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "slang-2.0.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/slang-2.0.5.tar.bz2;
+    url = ftp://space.mit.edu/pub/davis/slang/v2.0/slang-2.0.5.tar.bz2;
     md5 = "8b6afa085f76b1be29825f0c470b6cad";
   };
   buildInputs = [pcre libpng];
diff --git a/pkgs/development/libraries/speex/default.nix b/pkgs/development/libraries/speex/default.nix
index 9733c9f76d41..47e404db1f09 100644
--- a/pkgs/development/libraries/speex/default.nix
+++ b/pkgs/development/libraries/speex/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "speex-1.0.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/speex-1.0.5.tar.gz;
+    url = http://downloads.us.xiph.org/releases/speex/speex-1.0.5.tar.gz;
     md5 = "01d6a2de0a88a861304bf517615dea79";
   };
 }
diff --git a/pkgs/development/libraries/stlport/default.nix b/pkgs/development/libraries/stlport/default.nix
index 5fa157e8896f..58b7c13edee4 100644
--- a/pkgs/development/libraries/stlport/default.nix
+++ b/pkgs/development/libraries/stlport/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/STLport-5.0.0.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/stlport/STLport-5.0.0.tar.bz2;
     md5 = "5aefcbb0c30a91d50bb2d6c7b30e8393";
   };
 }
diff --git a/pkgs/development/libraries/t1lib/default.nix b/pkgs/development/libraries/t1lib/default.nix
index f62594667334..c5b26424cdf3 100644
--- a/pkgs/development/libraries/t1lib/default.nix
+++ b/pkgs/development/libraries/t1lib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "t1lib-5.1.0";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/t1lib-5.1.0.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/metalab/libs/graphics/t1lib-5.1.0.tar.gz;
     md5 = "a05bed4aa63637052e60690ccde70421";
   };
   buildInputs = [x11 libXaw];
diff --git a/pkgs/development/libraries/taglib/default.nix b/pkgs/development/libraries/taglib/default.nix
index e562485c9bfe..c065b4ce3b04 100644
--- a/pkgs/development/libraries/taglib/default.nix
+++ b/pkgs/development/libraries/taglib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "taglib-1.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/taglib-1.4.tar.gz;
+    url = http://developer.kde.org/~wheeler/files/src/taglib-1.4.tar.gz;
     md5 = "dcd50ddb2544faeae77f194804559404";
   };
   buildInputs = [zlib];
diff --git a/pkgs/development/libraries/tk/default.nix b/pkgs/development/libraries/tk/default.nix
index a4342c6ee7ad..fc7d11273aa8 100644
--- a/pkgs/development/libraries/tk/default.nix
+++ b/pkgs/development/libraries/tk/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "tk-8.4.13";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tk8.4.13-src.tar.gz;
+    url = http://heanet.dl.sourceforge.net/sourceforge/tcl/tk8.4.13-src.tar.gz;
     md5 = "0a16d4d9398e43cbb85784c85fb807a4";
   };
   buildInputs = [tcl x11];
diff --git a/pkgs/development/libraries/toolbuslib/default.nix b/pkgs/development/libraries/toolbuslib/default.nix
index 562262229d7f..0f187db8b20c 100644
--- a/pkgs/development/libraries/toolbuslib/default.nix
+++ b/pkgs/development/libraries/toolbuslib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
 name = "toolbuslib-0.7.2";
 src = fetchurl {
-         url = http://nix.cs.uu.nl/dist/tarballs/toolbuslib-0.7.2.tar.gz;
+         url = http://www.cwi.nl/projects/MetaEnv/toolbuslib/toolbuslib-0.7.2.tar.gz;
          md5 = "6619a155c6326d728d53c6901558e350";
    };
 inherit aterm;
diff --git a/pkgs/development/libraries/unixODBC/default.nix b/pkgs/development/libraries/unixODBC/default.nix
index ea297c571e98..937c6a3750ec 100644
--- a/pkgs/development/libraries/unixODBC/default.nix
+++ b/pkgs/development/libraries/unixODBC/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "unixODBC-2.2.11";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/unixODBC-2.2.11.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/unixodbc/unixODBC-2.2.11.tar.gz;
     md5 = "9ae806396844e38244cf65ad26ba0f23";
   };
   configureFlags = "--disable-gui";
diff --git a/pkgs/development/libraries/zlib/default.nix b/pkgs/development/libraries/zlib/default.nix
index 12a72cf5ed33..f59182c2ba58 100644
--- a/pkgs/development/libraries/zlib/default.nix
+++ b/pkgs/development/libraries/zlib/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "zlib-1.2.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zlib-1.2.3.tar.gz;
+    url = http://www.zlib.net/zlib-1.2.3.tar.gz;
     md5 = "debc62758716a169df9f62e6ab2bc634";
   };
   configureFlags = if static then "" else "--shared";
diff --git a/pkgs/development/libraries/zvbi/default.nix b/pkgs/development/libraries/zvbi/default.nix
index 763dab66013d..566ce7d6bc42 100644
--- a/pkgs/development/libraries/zvbi/default.nix
+++ b/pkgs/development/libraries/zvbi/default.nix
@@ -7,7 +7,7 @@ assert pngSupport -> libpng != null;
 stdenv.mkDerivation {
   name = "zvbi-0.2.12";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zvbi-0.2.22.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/zapping/zvbi-0.2.22.tar.bz2;
     md5 = "a01cbe39a48579ba92582ff75a5e37c2";
   };
   buildInputs = [x11 (if pngSupport then libpng else null)];
diff --git a/pkgs/development/perl-modules/XML-Parser/default.nix b/pkgs/development/perl-modules/XML-Parser/default.nix
index ce86a007279d..e0a18e68a4a3 100644
--- a/pkgs/development/perl-modules/XML-Parser/default.nix
+++ b/pkgs/development/perl-modules/XML-Parser/default.nix
@@ -3,7 +3,7 @@
 import ../generic perl {
   name = "XML-Parser-2.34";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/XML-Parser-2.34.tar.gz;
+    url = http://search.cpan.org/CPAN/authors/id/M/MS/MSERGEANT/XML-Parser-2.34.tar.gz;
     md5 = "84d9e0001fe01c14867256c3fe115899";
   };
   perlPreHook = "makeMakerFlags=\"EXPATLIBPATH=$expat/lib EXPATINCPATH=$expat/include\"";
diff --git a/pkgs/development/tools/build-managers/apache-ant/core-apache-ant-1.6.1.nix b/pkgs/development/tools/build-managers/apache-ant/core-apache-ant-1.6.1.nix
index 87038c7f26c7..070cc4071ad3 100644
--- a/pkgs/development/tools/build-managers/apache-ant/core-apache-ant-1.6.1.nix
+++ b/pkgs/development/tools/build-managers/apache-ant/core-apache-ant-1.6.1.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
 
   builder = ./core-builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/apache-ant-1.6.1-bin.tar.bz2;
+    url = http://www.apache.org/dist/ant/binaries/apache-ant-1.6.1-bin.tar.bz2;
     md5 = "703d0265d05b98afd95be0bc21b98420";
   };
 }
diff --git a/pkgs/development/tools/build-managers/apache-ant/core-apache-ant.nix b/pkgs/development/tools/build-managers/apache-ant/core-apache-ant.nix
index aed7ebd66d39..668a6c4d6b56 100644
--- a/pkgs/development/tools/build-managers/apache-ant/core-apache-ant.nix
+++ b/pkgs/development/tools/build-managers/apache-ant/core-apache-ant.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
 
   builder = ./core-builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/apache-ant-1.6.5-bin.tar.bz2;
+    url = http://apache.surfnet.nl/ant/binaries/apache-ant-1.6.5-bin.tar.bz2;
     md5 = "26031ee1a2fd248ad0cc2e7f17c44c39";
   };
 }
diff --git a/pkgs/development/tools/build-managers/gnumake/default.nix b/pkgs/development/tools/build-managers/gnumake/default.nix
index 9e751902922d..66de0c954835 100644
--- a/pkgs/development/tools/build-managers/gnumake/default.nix
+++ b/pkgs/development/tools/build-managers/gnumake/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gnumake-3.81";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/make-3.81.tar.bz2;
+    url = http://ftp.gnu.org/pub/gnu/make/make-3.81.tar.bz2;
     md5 = "354853e0b2da90c527e35aabb8d6f1e6";
   };
   
diff --git a/pkgs/development/tools/build-managers/scons/default.nix b/pkgs/development/tools/build-managers/scons/default.nix
index 960d9ea8e332..134c35307b56 100644
--- a/pkgs/development/tools/build-managers/scons/default.nix
+++ b/pkgs/development/tools/build-managers/scons/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "scons-0.96.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/scons-0.96.1.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/scons/scons-0.96.1.tar.gz;
     md5 = "45b1c346edd8a0970210aeb1e82557c9";
   };
   buildInputs = [python];
diff --git a/pkgs/development/tools/documentation/xdoc/default.nix b/pkgs/development/tools/documentation/xdoc/default.nix
index 324090532546..cc56d7e133e4 100644
--- a/pkgs/development/tools/documentation/xdoc/default.nix
+++ b/pkgs/development/tools/documentation/xdoc/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "xdoc-0.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xdoc-0.1.tar.gz;
+    url = http://machina.nl/xdoc/xdoc-0.1.tar.gz;
     md5 = "6f601254013d5fe3d2fdbd33b827001a";
   };
   builder = ./builder.sh;
diff --git a/pkgs/development/tools/java/jclasslib/default.nix b/pkgs/development/tools/java/jclasslib/default.nix
index dc0d475c4389..49b21c23397f 100644
--- a/pkgs/development/tools/java/jclasslib/default.nix
+++ b/pkgs/development/tools/java/jclasslib/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "jclasslib-2.0";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jclasslib_unix_2_0.tar.gz;
+    url = http://belnet.dl.sourceforge.net/sourceforge/jclasslib/jclasslib_unix_2_0.tar.gz;
     md5 = "31d91bb03fee23410689d2f1c4c439b1";
   };
 
diff --git a/pkgs/development/tools/misc/automake/automake-1.9.x.nix b/pkgs/development/tools/misc/automake/automake-1.9.x.nix
index d6e76d485303..745964accafc 100644
--- a/pkgs/development/tools/misc/automake/automake-1.9.x.nix
+++ b/pkgs/development/tools/misc/automake/automake-1.9.x.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   setupHook = ./setup-hook.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/automake-1.9.6.tar.gz;
+    url = ftp://ftp.gnu.org/gnu/automake/automake-1.9.6.tar.gz;
     md5 = "c60f77a42f103606981d456f1615f5b4";
   };
   buildInputs = [perl autoconf];
diff --git a/pkgs/development/tools/misc/binutils-cross/default.nix b/pkgs/development/tools/misc/binutils-cross/default.nix
index b3949e43f5c7..7d77baced373 100644
--- a/pkgs/development/tools/misc/binutils-cross/default.nix
+++ b/pkgs/development/tools/misc/binutils-cross/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "binutils-2.16.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/binutils-2.16.1.tar.bz2;
+    url = http://ftp.nluug.nl/gnu/binutils/binutils-2.16.1.tar.bz2;
     md5 = "6a9d529efb285071dad10e1f3d2b2967";
   };
   inherit noSysDirs;
diff --git a/pkgs/development/tools/misc/ctags/default.nix b/pkgs/development/tools/misc/ctags/default.nix
index 2957710a34f1..a8f4a821a20c 100644
--- a/pkgs/development/tools/misc/ctags/default.nix
+++ b/pkgs/development/tools/misc/ctags/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "ctags-5.5.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ctags-5.5.4.tar.gz;
+    url = http://heanet.dl.sourceforge.net/sourceforge/ctags/ctags-5.5.4.tar.gz;
     md5 = "a84124caadd4103270e0b84596ecfe83";
   };
 }
diff --git a/pkgs/development/tools/misc/help2man/default.nix b/pkgs/development/tools/misc/help2man/default.nix
index 19b9848309da..0a9e66568b5f 100644
--- a/pkgs/development/tools/misc/help2man/default.nix
+++ b/pkgs/development/tools/misc/help2man/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "help2man-1.35.1";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/help2man-1.35.1.tar.gz;
+    url = http://ftp.gnu.org/gnu/help2man/help2man-1.35.1.tar.gz;
     md5 = "e3c9e846dd163eb7f1d1661e2d0baa07";
   };
 
diff --git a/pkgs/development/tools/misc/help2man/help2man-1.36.4.nix b/pkgs/development/tools/misc/help2man/help2man-1.36.4.nix
index 7705265667bc..1a7be3747194 100644
--- a/pkgs/development/tools/misc/help2man/help2man-1.36.4.nix
+++ b/pkgs/development/tools/misc/help2man/help2man-1.36.4.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "help2man-1.36.4";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/help2man-1.36.4.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/help2man/help2man-1.36.4.tar.gz;
     md5 = "d31a0a38c2ec71faa06723f6b8bd3076";
   };
 
diff --git a/pkgs/development/tools/misc/kcachegrind/default.nix b/pkgs/development/tools/misc/kcachegrind/default.nix
index 171a6e60e30f..d6ceaa4eb5dc 100644
--- a/pkgs/development/tools/misc/kcachegrind/default.nix
+++ b/pkgs/development/tools/misc/kcachegrind/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "kcachegrind-0.4.6";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/kcachegrind-0.4.6.tar.gz;
+    url = http://kcachegrind.sourceforge.net/kcachegrind-0.4.6.tar.gz;
     md5 = "4ed60028dcefd6bf626635d5f2f50273";
   };
 
diff --git a/pkgs/development/tools/misc/libtool/default.nix b/pkgs/development/tools/misc/libtool/default.nix
index 889ebb345027..226552b3943e 100644
--- a/pkgs/development/tools/misc/libtool/default.nix
+++ b/pkgs/development/tools/misc/libtool/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libtool-1.5.22";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libtool-1.5.22.tar.gz;
+    url = http://ftp.gnu.org/gnu/libtool/libtool-1.5.22.tar.gz;
     md5 = "8e0ac9797b62ba4dcc8a2fb7936412b0";
   };
   buildInputs = [m4 perl];
diff --git a/pkgs/development/tools/parsing/antlr/antlr-2.7.6.nix b/pkgs/development/tools/parsing/antlr/antlr-2.7.6.nix
index 72777d891fce..43151ba589af 100644
--- a/pkgs/development/tools/parsing/antlr/antlr-2.7.6.nix
+++ b/pkgs/development/tools/parsing/antlr/antlr-2.7.6.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "antlr-2.7.6";
   builder = ./builder2.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/antlr-2.7.6.tar.gz;
+    url = http://www.antlr.org/download/antlr-2.7.6.tar.gz;
     md5 = "17d8bf2e814f0a26631aadbbda8d7324";
   };
   inherit jre;
diff --git a/pkgs/development/tools/parsing/antlr/default.nix b/pkgs/development/tools/parsing/antlr/default.nix
index e0ae25597786..deb8040256b5 100644
--- a/pkgs/development/tools/parsing/antlr/default.nix
+++ b/pkgs/development/tools/parsing/antlr/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "antlr-3.0b3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/antlr-3.0b3.tar.gz;
+    url = http://www.antlr.org/download/antlr-3.0b3.tar.gz;
     md5 = "6a7e70ccece8149b735cc3aaa24241cc";
   };
   inherit jre;
diff --git a/pkgs/development/tools/parsing/bison/bison-2.3.nix b/pkgs/development/tools/parsing/bison/bison-2.3.nix
index bf424aee8700..c732dd0afcf1 100644
--- a/pkgs/development/tools/parsing/bison/bison-2.3.nix
+++ b/pkgs/development/tools/parsing/bison/bison-2.3.nix
@@ -5,7 +5,7 @@ assert m4 != null;
 stdenv.mkDerivation {
   name = "bison-2.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bison-2.3.tar.bz2;
+    url = ftp://ftp.nluug.nl/pub/gnu/bison/bison-2.3.tar.bz2;
     md5 = "c18640c6ec31a169d351e3117ecce3ec";
   };
   buildInputs = [m4];
diff --git a/pkgs/development/tools/parsing/flex/flex-2.5.33.nix b/pkgs/development/tools/parsing/flex/flex-2.5.33.nix
index be1dbcdfe5ec..b6ba4b81c39c 100644
--- a/pkgs/development/tools/parsing/flex/flex-2.5.33.nix
+++ b/pkgs/development/tools/parsing/flex/flex-2.5.33.nix
@@ -8,7 +8,7 @@ assert yacc != null && m4 != null;
 stdenv.mkDerivation {
   name = "flex-2.5.33";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/flex-2.5.33.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/flex/flex-2.5.33.tar.bz2;
     md5 = "343374a00b38d9e39d1158b71af37150";
   };
   buildInputs = [yacc];
diff --git a/pkgs/development/tools/parsing/happy/default.nix b/pkgs/development/tools/parsing/happy/default.nix
index e46b7292da83..ac3fb088bbab 100644
--- a/pkgs/development/tools/parsing/happy/default.nix
+++ b/pkgs/development/tools/parsing/happy/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "happy-1.14";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/happy-1.14-src.tar.gz;
+    url = http://www.haskell.org/happy/dist/1.14/happy-1.14-src.tar.gz;
     md5 = "501b5b63533b2e2838de18085e8c4492";
   };
   buildInputs = [ghc perl];
diff --git a/pkgs/development/tools/parsing/jikespg/default.nix b/pkgs/development/tools/parsing/jikespg/default.nix
index 1699857a12d7..9fe1207ba224 100644
--- a/pkgs/development/tools/parsing/jikespg/default.nix
+++ b/pkgs/development/tools/parsing/jikespg/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "jikespg-1.3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jikespg-1.3.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/jikes/jikespg-1.3.tar.gz;
     md5 = "eba183713d9ae61a887211be80eeb21f";
   };
 }
diff --git a/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.5.1.nix b/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.5.1.nix
index def781540910..4b93aa24bafc 100644
--- a/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.5.1.nix
+++ b/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.5.1.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "toolbuslib-0.5.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/toolbuslib-0.5.1.tar.gz;
+    url = http://www.cwi.nl/projects/MetaEnv/toolbuslib/toolbuslib-0.5.1.tar.gz;
     md5 = "1c7c7cce870f813bef60bbffdf061c90";
   };
   buildInputs = [aterm];
diff --git a/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.6.nix b/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.6.nix
index a231e834d3f6..c49ac9f0663a 100644
--- a/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.6.nix
+++ b/pkgs/development/tools/parsing/toolbuslib/toolbuslib-0.6.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "toolbuslib-0.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/toolbuslib-0.6.tar.gz;
+    url = http://www.cwi.nl/projects/MetaEnv/toolbuslib/toolbuslib-0.6.tar.gz;
     md5 = "e117c574b428408ad172b1ad904ff430";
   };
   buildInputs = [aterm];
diff --git a/pkgs/games/exult/default.nix b/pkgs/games/exult/default.nix
index f18630caf480..3df49cf50853 100644
--- a/pkgs/games/exult/default.nix
+++ b/pkgs/games/exult/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/exult-1.2.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/exult/exult-1.2.tar.gz;
     md5 = "0fc88dee74a91724d25373ba0a8670ba";
   };
 
@@ -17,11 +17,11 @@ stdenv.mkDerivation {
   # we don't need actual MIDI playback capability.
   musicFiles = [
     (fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/U7MusicOGG_1of2.zip;
+      url = http://surfnet.dl.sourceforge.net/sourceforge/exult/U7MusicOGG_1of2.zip;
       md5 = "7746d1a9164fd67509107797496553bf";
     })
     (fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/U7MusicOGG_2of2.zip;
+      url = http://surfnet.dl.sourceforge.net/sourceforge/exult/U7MusicOGG_2of2.zip;
       md5 = "cdae5956d7c52f35e90317913a660123";
     })
   ];    
diff --git a/pkgs/games/zoom/default.nix b/pkgs/games/zoom/default.nix
index 71b4241582dc..7fbd61c3e7a9 100644
--- a/pkgs/games/zoom/default.nix
+++ b/pkgs/games/zoom/default.nix
@@ -5,7 +5,7 @@
 stdenv.mkDerivation {
   name = "zoom-1.0.2alpha1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zoom-1.0.2alpha1.tar.gz;
+    url = http://www.logicalshift.demon.co.uk/unix/zoom/zoom-1.0.2alpha1.tar.gz;
     md5 = "91b2fe444028178aa3b23bd0e3ae1a61";
   };
   buildInputs = [perl expat xlibs freetype];
diff --git a/pkgs/misc/busybox/busybox-1.1.nix b/pkgs/misc/busybox/busybox-1.1.nix
index cebae6c56aa2..e7fb996c45f0 100644
--- a/pkgs/misc/busybox/busybox-1.1.nix
+++ b/pkgs/misc/busybox/busybox-1.1.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/busybox-1.1.3.tar.bz2;
+    url = http://busybox.net/downloads/busybox-1.1.3.tar.bz2;
     md5 = "19a0b475169335f17e421cf644616fe7";
   };
 
diff --git a/pkgs/misc/emulators/atari++/default.nix b/pkgs/misc/emulators/atari++/default.nix
index 51dd44c03a0c..4f00050b3d1e 100644
--- a/pkgs/misc/emulators/atari++/default.nix
+++ b/pkgs/misc/emulators/atari++/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "atari++-1.46";
 #  builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/atari++.tgz;
+    url = http://www.math.tu-berlin.de/~thor/atari++/download/atari++.tgz;
     md5 = "0619ec6b63852233111aa0bd263c8ea2";
   };
 #  rom = fetchurl {
diff --git a/pkgs/misc/emulators/atari800/default.nix b/pkgs/misc/emulators/atari800/default.nix
index a800f3c9ad3f..0821a05f422e 100644
--- a/pkgs/misc/emulators/atari800/default.nix
+++ b/pkgs/misc/emulators/atari800/default.nix
@@ -4,11 +4,11 @@ stdenv.mkDerivation {
   name = "atari800-2.0.2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/atari800-2.0.2.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/atari800/atari800-2.0.2.tar.gz;
     md5 = "a81f8a5ace5fd89eb6094faef7c936af";
   };
   rom = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xf25.zip;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/atari800/xf25.zip;
     md5 = "4dc3b6b4313e9596c4d474785a37b94d";
   };
   buildInputs = [unzip zlib SDL];
diff --git a/pkgs/misc/emulators/dosbox/default.nix b/pkgs/misc/emulators/dosbox/default.nix
index 41d1885fafe0..d968f2f8eff4 100644
--- a/pkgs/misc/emulators/dosbox/default.nix
+++ b/pkgs/misc/emulators/dosbox/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation { 
   name = "dosbox-0.65";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/dosbox-0.65.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/dosbox/dosbox-0.65.tar.gz;
     md5 = "fef84c292c3aeae747368b9875c1575a";
   };
   buildInputs = [SDL];
diff --git a/pkgs/misc/sane-backends/default.nix b/pkgs/misc/sane-backends/default.nix
index fff030a625c7..561e053416e0 100644
--- a/pkgs/misc/sane-backends/default.nix
+++ b/pkgs/misc/sane-backends/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "sane-backends-1.0.18";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/sane-backends-1.0.18.tar.gz;
+    url = ftp://ftp.sane-project.org/pub/sane/sane-backends-1.0.18/sane-backends-1.0.18.tar.gz;
     md5 = "7ca7e2908e24721471de92cf40c75e60";
   };
   udevSupport = hotplugSupport;
diff --git a/pkgs/misc/screensavers/rss-glx/default.nix b/pkgs/misc/screensavers/rss-glx/default.nix
index c260334d2c51..a120c52bb3dc 100644
--- a/pkgs/misc/screensavers/rss-glx/default.nix
+++ b/pkgs/misc/screensavers/rss-glx/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/rss-glx_0.8.1.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/rss-glx/rss-glx_0.8.1.tar.bz2;
     md5 = "a2bdf0e10ee4e89c8975f313c5c0ba6f";
   };
 
diff --git a/pkgs/misc/tex/lazylist/default.nix b/pkgs/misc/tex/lazylist/default.nix
index bd5983efa737..19637793b00d 100644
--- a/pkgs/misc/tex/lazylist/default.nix
+++ b/pkgs/misc/tex/lazylist/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/lazylist-1.0a.tar.bz2;
+    url = http://www.iai.uni-bonn.de/~loeh/lhs2tex/lazylist-1.0a.tar.bz2;
     md5 = "8ef357df5845bd8d6075fca6e1f214ab";
   };
 
diff --git a/pkgs/misc/tex/polytable/default.nix b/pkgs/misc/tex/polytable/default.nix
index af05c24abf7b..0b6d954fc197 100644
--- a/pkgs/misc/tex/polytable/default.nix
+++ b/pkgs/misc/tex/polytable/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/polytable-0.8.2.tar.gz;
+    url = http://www.iai.uni-bonn.de/~loeh/polytable-0.8.2.tar.gz;
     md5 = "c59edf035ae6e19b64b1ae920fea28e7";
   };
 
diff --git a/pkgs/misc/tex/tetex/default.nix b/pkgs/misc/tex/tetex/default.nix
index 82fb27c8369d..9ff50dd5ab38 100644
--- a/pkgs/misc/tex/tetex/default.nix
+++ b/pkgs/misc/tex/tetex/default.nix
@@ -5,12 +5,12 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tetex-src-3.0.tar.gz;
+    url = ftp://cam.ctan.org/tex-archive/systems/unix/teTeX/current/distrib/tetex-src-3.0.tar.gz;
     md5 = "944a4641e79e61043fdaf8f38ecbb4b3";
   };
 
   texmf = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tetex-texmf-3.0.tar.gz;
+    url = ftp://cam.ctan.org/tex-archive/systems/unix/teTeX/current/distrib/tetex-texmf-3.0.tar.gz;
     md5 = "11aa15c8d3e28ee7815e0d5fcdf43fd4";
   };
 
diff --git a/pkgs/os-specific/linux/dietlibc/default.nix b/pkgs/os-specific/linux/dietlibc/default.nix
index 633bd40749da..4927b5ce379f 100644
--- a/pkgs/os-specific/linux/dietlibc/default.nix
+++ b/pkgs/os-specific/linux/dietlibc/default.nix
@@ -5,7 +5,7 @@ assert stdenv.isLinux;
 stdenv.mkDerivation {
   name = "dietlibc-0.30";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/dietlibc-0.30.tar.bz2;
+    url = http://www.kernel.org/pub/linux/libs/dietlibc/dietlibc-0.30.tar.bz2;
     md5 = "2465d652fff6f1fad3da3b98e60e83c9";
   };
   builder = ./builder.sh;
diff --git a/pkgs/os-specific/linux/e2fsprogs/default.nix b/pkgs/os-specific/linux/e2fsprogs/default.nix
index dd63bdd0cf7f..7b2ff8b85fc9 100644
--- a/pkgs/os-specific/linux/e2fsprogs/default.nix
+++ b/pkgs/os-specific/linux/e2fsprogs/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "e2fsprogs-1.39";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/e2fsprogs-1.39.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/e2fsprogs/e2fsprogs-1.39.tar.gz;
     md5 = "06f7806782e357797fad1d34b7ced0c6";
   };
   configureFlags =
diff --git a/pkgs/os-specific/linux/hwdata/default.nix b/pkgs/os-specific/linux/hwdata/default.nix
index a624afd0d6fa..4c0a46f460cb 100644
--- a/pkgs/os-specific/linux/hwdata/default.nix
+++ b/pkgs/os-specific/linux/hwdata/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "hwdata-0.172";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/hwdata_0.172.orig.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/os/Linux/distr/debian/pool/main/h/hwdata/hwdata_0.172.orig.tar.gz;
     md5 = "1c6b7f4dfe489f881702176c5f8e5a2e";
   };
 }
diff --git a/pkgs/os-specific/linux/iputils/default.nix b/pkgs/os-specific/linux/iputils/default.nix
index cc875f6b1458..c57cf68fd5dd 100644
--- a/pkgs/os-specific/linux/iputils/default.nix
+++ b/pkgs/os-specific/linux/iputils/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "iputils-20020927";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/iputils_20020927.orig.tar.gz;
+    url = ftp://ftp.nl.debian.org/debian/pool/main/i/iputils/iputils_20020927.orig.tar.gz;
     md5 = "b5493f7a2997130a4f86c486c9993b86";
   };
 
diff --git a/pkgs/os-specific/linux/kernel-headers-cross/default.nix b/pkgs/os-specific/linux/kernel-headers-cross/default.nix
index a20dbabc4c4b..efe6ba383f4b 100644
--- a/pkgs/os-specific/linux/kernel-headers-cross/default.nix
+++ b/pkgs/os-specific/linux/kernel-headers-cross/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "linux-headers-2.6.14.5";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/linux-2.6.14.5.tar.bz2;
+    url = ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.14.5.tar.bz2;
     md5 = "9f057e3bd31c50dc48553def01bc8037";
   };
   inherit cross;
diff --git a/pkgs/os-specific/linux/libselinux/default.nix b/pkgs/os-specific/linux/libselinux/default.nix
index 2f360bfa4c46..e0a02a141960 100644
--- a/pkgs/os-specific/linux/libselinux/default.nix
+++ b/pkgs/os-specific/linux/libselinux/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   name = "libselinux-1.30";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libselinux-1.30.tgz;
+    url = http://www.nsa.gov/selinux/archives/libselinux-1.30.tgz;
     md5 = "0b7d269c9b7d847059e4b11a710ab404";
   };
 
diff --git a/pkgs/os-specific/linux/libsepol/default.nix b/pkgs/os-specific/linux/libsepol/default.nix
index 8dcc1e2fb3e7..eac7efecaed4 100644
--- a/pkgs/os-specific/linux/libsepol/default.nix
+++ b/pkgs/os-specific/linux/libsepol/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
   name = "libsepol-1.12";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/libsepol-1.12.tgz;
+    url = http://www.nsa.gov/selinux/archives/libsepol-1.12.tgz;
     md5 = "937885f1fcbfe597a0f02aa9af044710";
   };
 }
diff --git a/pkgs/os-specific/linux/mingetty/default.nix b/pkgs/os-specific/linux/mingetty/default.nix
index f824c3f4aa90..efb8240fdde5 100644
--- a/pkgs/os-specific/linux/mingetty/default.nix
+++ b/pkgs/os-specific/linux/mingetty/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "mingetty-1.07";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mingetty_1.07.orig.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/os/Linux/distr/debian/pool/main/m/mingetty/mingetty_1.07.orig.tar.gz;
     md5 = "491dedf1ceff0e0f5f7bb9f55bf5213e";
   };
   patches = [./makefile.patch];
diff --git a/pkgs/os-specific/linux/module-init-tools/default.nix b/pkgs/os-specific/linux/module-init-tools/default.nix
index 1702bc014b95..3b46e6a36d55 100644
--- a/pkgs/os-specific/linux/module-init-tools/default.nix
+++ b/pkgs/os-specific/linux/module-init-tools/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "module-init-tools-3.2.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/module-init-tools-3.2.2.tar.bz2;
+    url = ftp://ftp.kernel.org/pub/linux/utils/kernel/module-init-tools/module-init-tools-3.2.2.tar.bz2;
     md5 = "a1ad0a09d3231673f70d631f3f5040e9";
   };
   patches = [./module-dir.patch];
diff --git a/pkgs/os-specific/linux/net-tools/default.nix b/pkgs/os-specific/linux/net-tools/default.nix
index 1538ac47aa8d..d8764f391d68 100644
--- a/pkgs/os-specific/linux/net-tools/default.nix
+++ b/pkgs/os-specific/linux/net-tools/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "net-tools-1.60";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/net-tools-1.60.tar.bz2;
+    url = http://www.tazenda.demon.co.uk/phil/net-tools/net-tools-1.60.tar.bz2;
     md5 = "888774accab40217dde927e21979c165";
   };
   config = ./config.h;
diff --git a/pkgs/os-specific/linux/ov511/ov511-2.32-default.nix b/pkgs/os-specific/linux/ov511/ov511-2.32-default.nix
index 906f71b0709a..6af69d882dba 100644
--- a/pkgs/os-specific/linux/ov511/ov511-2.32-default.nix
+++ b/pkgs/os-specific/linux/ov511/ov511-2.32-default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ov511-2.32";
   builder = ./ov511-2.32-builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/ov511-2.32.tar.bz2;
+    url = http://www.ovcam.org/ov511/download/2.xx/distros/ov511-2.32.tar.bz2;
     md5 = "6a08025311649356242761641a1df0f2";
   };
   patches = [./ov511-kernel.patch ./ov511-2.32.patch ./ov511-2.32-kdir.patch];
diff --git a/pkgs/os-specific/linux/procps/default.nix b/pkgs/os-specific/linux/procps/default.nix
index 0d96f1666062..e65287e91393 100644
--- a/pkgs/os-specific/linux/procps/default.nix
+++ b/pkgs/os-specific/linux/procps/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "procps-3.2.7";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/procps-3.2.7.tar.gz;
+    url = http://procps.sourceforge.net/procps-3.2.7.tar.gz;
     md5 = "f490bca772b16472962c7b9f23b1e97d";
   };
   patches = [./makefile.patch ./procps-build.patch];
diff --git a/pkgs/os-specific/linux/qc-usb/default.nix b/pkgs/os-specific/linux/qc-usb/default.nix
index 92bb10689418..76501b1a0f77 100644
--- a/pkgs/os-specific/linux/qc-usb/default.nix
+++ b/pkgs/os-specific/linux/qc-usb/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "qc-usb-0.6.4";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/qc-usb-0.6.4.tar.gz;
+    url = http://heanet.dl.sourceforge.net/sourceforge/qce-ga/qc-usb-0.6.4.tar.gz;
     md5 = "7e91c3a633382c99100e3ef4f1d9f50a";
   };
   inherit kernel;
diff --git a/pkgs/os-specific/linux/squashfs/default.nix b/pkgs/os-specific/linux/squashfs/default.nix
index f13162e890b5..7fa92baa6c29 100644
--- a/pkgs/os-specific/linux/squashfs/default.nix
+++ b/pkgs/os-specific/linux/squashfs/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "squashfs-3.1-r2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/squashfs3.1-r2.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/squashfs/squashfs3.1-r2.tar.gz;
     md5 = "c252e5286b142afa54ca49829c51a33f";
   };
   buildInputs = [zlib];
diff --git a/pkgs/os-specific/linux/sysklogd/default.nix b/pkgs/os-specific/linux/sysklogd/default.nix
index b2319ab446fc..d991d7e653e1 100644
--- a/pkgs/os-specific/linux/sysklogd/default.nix
+++ b/pkgs/os-specific/linux/sysklogd/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "sysklogd-1.4.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/sysklogd-1.4.1.tar.gz;
+    url = http://www.infodrom.org/projects/sysklogd/download/sysklogd-1.4.1.tar.gz;
     md5 = "d214aa40beabf7bdb0c9b3c64432c774";
   };
   patches = [./sysklogd-1.4.1-cvs-20050525-local.diff ./sysklogd-1.4.1-asm.patch];
diff --git a/pkgs/servers/ftp/vsftpd/default.nix b/pkgs/servers/ftp/vsftpd/default.nix
index e9b17400d17d..a6a5afcfd6fc 100644
--- a/pkgs/servers/ftp/vsftpd/default.nix
+++ b/pkgs/servers/ftp/vsftpd/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "vsftpd-2.0.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/vsftpd-2.0.3.tar.gz;
+    url = ftp://vsftpd.beasts.org/users/cevans/vsftpd-2.0.3.tar.gz;
     md5 = "74936cbd8e8251deb1cd99c5fb18b6f8" ;
   };
   
diff --git a/pkgs/servers/http/apache-modules/mod_python/default.nix b/pkgs/servers/http/apache-modules/mod_python/default.nix
index c1456804489f..16d247fe8dc6 100644
--- a/pkgs/servers/http/apache-modules/mod_python/default.nix
+++ b/pkgs/servers/http/apache-modules/mod_python/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mod_python-3.2.10.tgz;
+    url = http://apache.surfnet.nl/httpd/modpython/mod_python-3.2.10.tgz;
     md5 = "cc6439f546a6e70cfff7ca51b8c62541";
   };
 
diff --git a/pkgs/servers/http/jetty/default.nix b/pkgs/servers/http/jetty/default.nix
index 54d5a4df5f76..741432ae12b9 100644
--- a/pkgs/servers/http/jetty/default.nix
+++ b/pkgs/servers/http/jetty/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   buildInputs = [unzip];
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jetty-5.1.4.zip;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/jetty/jetty-5.1.4.zip;
     md5 = "5d16bb1ea4a62dff93c0b7f7de00430f";
   };
 }
diff --git a/pkgs/servers/http/tomcat/default.nix b/pkgs/servers/http/tomcat/default.nix
index 9c32965d8cc1..c15604cb0ae0 100644
--- a/pkgs/servers/http/tomcat/default.nix
+++ b/pkgs/servers/http/tomcat/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jakarta-tomcat-5.0.27.tar.gz;
+    url = http://apache.essentkabel.com/jakarta/tomcat-5/v5.0.27/bin/jakarta-tomcat-5.0.27.tar.gz;
     md5 = "b802ee042677e284bcf65738c7bdc3b6";
   };
 
diff --git a/pkgs/servers/sql/mysql/default.nix b/pkgs/servers/sql/mysql/default.nix
index b028baa21b36..3a13aa323a19 100644
--- a/pkgs/servers/sql/mysql/default.nix
+++ b/pkgs/servers/sql/mysql/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "mysql-4.1.18";
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mysql-4.1.18.tar.gz;
+    url = http://downloads.mysql.com/archives/mysql-4.1/mysql-4.1.18.tar.gz;
     md5 = "a2db4edb3e1e3b8e0f8c2242225ea513";
   };
 
diff --git a/pkgs/servers/sql/mysql/jdbc/default.nix b/pkgs/servers/sql/mysql/jdbc/default.nix
index 01147eebd63d..0cbb13687176 100644
--- a/pkgs/servers/sql/mysql/jdbc/default.nix
+++ b/pkgs/servers/sql/mysql/jdbc/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mysql-connector-java-3.1.12.tar.gz;
+    url = http://mysql.proserve.nl/Downloads/Connector-J/mysql-connector-java-3.1.12.tar.gz;
     md5 = "c8c15443dfa9541545aad02d744a077b";
   };
 
diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index 4be9287c0c2d..b9ed02ffd206 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/postgresql-8.0.6.tar.bz2;
+    url = ftp://ftp2.nl.postgresql.org/mirror/postgresql/source/v8.0.6/postgresql-8.0.6.tar.bz2;
     md5 = "f3b27b8171267f9a87592f931c09f0ee";
   };
 
diff --git a/pkgs/shells/tcsh/default.nix b/pkgs/shells/tcsh/default.nix
index 30a2bc350ac3..cd374289d543 100644
--- a/pkgs/shells/tcsh/default.nix
+++ b/pkgs/shells/tcsh/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "tcsh-6.14.00";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/tcsh-6.14.00.tar.gz;
+    url = ftp://ftp.gw.com/pub/unix/tcsh/tcsh-6.14.00.tar.gz;
     md5 = "353d1bb7d2741bf8de602c7b6f0efd79";
   };
   buildInputs = [ncurses];
diff --git a/pkgs/stdenv/mingw/pkgs/default.nix b/pkgs/stdenv/mingw/pkgs/default.nix
index 93f0e8b9a28f..27a4a032c5f6 100755
--- a/pkgs/stdenv/mingw/pkgs/default.nix
+++ b/pkgs/stdenv/mingw/pkgs/default.nix
@@ -23,7 +23,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/mingw32-make-3.81-1.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/mingw32-make-3.81-1.tar.gz;
           md5 = "74c2f44ecc699b318edeb07d838feae5";
         };
     };
@@ -37,7 +37,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/gcc-core-3.4.2-20040916-1.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/gcc-core-3.4.2-20040916-1.tar.gz;
           md5 = "d9cd78f926fc31ef101c6fa7072fc65d";
         };
     };
@@ -51,7 +51,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/gcc-g++-3.4.2-20040916-1.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/gcc-g++-3.4.2-20040916-1.tar.gz;
           md5 = "e5c7eb2c1e5f7e10842eac03d1d6fcdc";
         };
     };
@@ -65,7 +65,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/binutils-2.16.91-20060119-1.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/binutils-2.16.91-20060119-1.tar.gz;
           md5 = "a54f33ca9d6cf56dc99c0c5367f58ea3";
         };
     };
@@ -76,7 +76,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/mingw-runtime-3.10.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/mingw-runtime-3.10.tar.gz;
           md5 = "7fa2638d23136fd84d5d627bef3b408a";
         };
     };
@@ -87,7 +87,7 @@ rec {
       builder = ./src-builder.sh;
       src =
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/mingw-runtime-3.10-src.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/mingw-runtime-3.10-src.tar.gz;
           md5 = "9225684e663eafa900b4075731c25f4c";
         };
     };
@@ -98,7 +98,7 @@ rec {
       builder = ./bin-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/w32api-3.7.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/w32api-3.7.tar.gz;
           md5 = "0b3a6d08136581c93b3a3207588acea9";
         };
     };
@@ -109,7 +109,7 @@ rec {
       builder = ./src-builder.sh;
       src = 
         fetchurl {
-          url = http://nix.cs.uu.nl/dist/tarballs/w32api-3.7-src.tar.gz;
+          url = http://surfnet.dl.sourceforge.net/sourceforge/mingw/w32api-3.7-src.tar.gz;
           md5 = "d799c407b4c1b480d0339994d01f355d";
         };
     };
diff --git a/pkgs/tools/archivers/zip/default.nix b/pkgs/tools/archivers/zip/default.nix
index c6a53b7dafd0..51a1b618e023 100644
--- a/pkgs/tools/archivers/zip/default.nix
+++ b/pkgs/tools/archivers/zip/default.nix
@@ -2,7 +2,7 @@
   name = "zip-2.32";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zip232.tar.gz;
+    url = http://ftp.info-zip.org/pub/infozip/src/zip232.tar.gz;
     md5 = "8a4da4460386e324debe97f3b7fe4d96";
   };
 }
diff --git a/pkgs/tools/compression/bsdiff/default.nix b/pkgs/tools/compression/bsdiff/default.nix
index a8ef5ef025ad..9f1c3ecf8bcb 100644
--- a/pkgs/tools/compression/bsdiff/default.nix
+++ b/pkgs/tools/compression/bsdiff/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "bsdiff-4.2";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bsdiff-4.2.tar.gz;
+    url = http://www.daemonology.net/bsdiff/bsdiff-4.2.tar.gz;
     md5 = "9f582a77eb76d116d82d1ad268ef48fa";
   };
   patches = [./makefile.patch];
diff --git a/pkgs/tools/compression/zdelta/default.nix b/pkgs/tools/compression/zdelta/default.nix
index 49ee14b10e84..8bd6d8a0e16b 100644
--- a/pkgs/tools/compression/zdelta/default.nix
+++ b/pkgs/tools/compression/zdelta/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "zdelta-2.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/zdelta-2.1.tar.gz;
+    url = http://cis.poly.edu/zdelta/downloads/zdelta-2.1.tar.gz;
     md5 = "c69583a64f42f69a39e297d0d27d77e5";
   };
 }
diff --git a/pkgs/tools/graphics/gnuplot/default.nix b/pkgs/tools/graphics/gnuplot/default.nix
index c73d36d8d710..5aa17ea9d9ae 100644
--- a/pkgs/tools/graphics/gnuplot/default.nix
+++ b/pkgs/tools/graphics/gnuplot/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
 #  builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gnuplot-4.0.0.tar.gz;
+    url = http://heanet.dl.sourceforge.net/sourceforge/gnuplot/gnuplot-4.0.0.tar.gz;
     md5 = "66258443d9f93cc4f46b147dac33e63a";
   };
 
diff --git a/pkgs/tools/graphics/ploticus/default.nix b/pkgs/tools/graphics/ploticus/default.nix
index 9d284d29d842..5907f1a1ca3c 100644
--- a/pkgs/tools/graphics/ploticus/default.nix
+++ b/pkgs/tools/graphics/ploticus/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/pl233src.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/ploticus/pl233src.tar.gz;
     md5 = "1e242200e7e52f7a24041c95f58f2fc1";
   };
 
diff --git a/pkgs/tools/graphics/transfig/default.nix b/pkgs/tools/graphics/transfig/default.nix
index 9b90c0ecbbca..cf3722bbf1f6 100644
--- a/pkgs/tools/graphics/transfig/default.nix
+++ b/pkgs/tools/graphics/transfig/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "transfig-3.2.4";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/transfig.3.2.4.tar.gz;
+    url = ftp://ftp.tex.ac.uk/pub/archive/graphics/transfig/transfig.3.2.4.tar.gz;
     md5 = "742de0f7a3cae74d247bbd0c70dd9dd7";
   };
 
diff --git a/pkgs/tools/misc/bc/default.nix b/pkgs/tools/misc/bc/default.nix
index bdf5a50aa0b6..18d00169729d 100644
--- a/pkgs/tools/misc/bc/default.nix
+++ b/pkgs/tools/misc/bc/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "bc-1.0.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/bc-1.06.tar.gz;
+    url = http://ftp.gnu.org/pub/gnu/bc/bc-1.06.tar.gz;
     md5 = "d44b5dddebd8a7a7309aea6c36fda117";
   };
 
diff --git a/pkgs/tools/misc/file/default.nix b/pkgs/tools/misc/file/default.nix
index bfdd60626d60..d7e31e9cf32e 100644
--- a/pkgs/tools/misc/file/default.nix
+++ b/pkgs/tools/misc/file/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "file-4.17";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/file-4.17.tar.gz;
+    url = ftp://ftp.astron.com/pub/file/file-4.17.tar.gz;
     md5 = "50919c65e0181423d66bb25d7fe7b0fd";
   };
 }
diff --git a/pkgs/tools/misc/grub/default.nix b/pkgs/tools/misc/grub/default.nix
index 9a1ee4319df1..0a406f72b46d 100644
--- a/pkgs/tools/misc/grub/default.nix
+++ b/pkgs/tools/misc/grub/default.nix
@@ -7,7 +7,7 @@ else
 stdenv.mkDerivation {
   name = "grub-0.97";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/grub-0.97.tar.gz;
+    url = ftp://alpha.gnu.org/gnu/grub/grub-0.97.tar.gz;
     md5 = "cd3f3eb54446be6003156158d51f4884";
   };
 }
diff --git a/pkgs/tools/misc/jdiskreport/default.nix b/pkgs/tools/misc/jdiskreport/default.nix
index 952599e69378..6229ca60d4c1 100644
--- a/pkgs/tools/misc/jdiskreport/default.nix
+++ b/pkgs/tools/misc/jdiskreport/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "jdiskreport-1.2.3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jdiskreport-1_2_3.zip;
+    url = http://www.jgoodies.com/download/jdiskreport/jdiskreport-1_2_3.zip;
     md5 = "4a33c5c1344ed9e0fa531e2cb1875cb8";
   };
   buildInputs = [unzip];
diff --git a/pkgs/tools/misc/less/default.nix b/pkgs/tools/misc/less/default.nix
index e6ece605c53e..ad7fe970d310 100644
--- a/pkgs/tools/misc/less/default.nix
+++ b/pkgs/tools/misc/less/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "less-394";
  
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/less-394.tar.gz;
+    url = http://www.greenwoodsoftware.com/less/less-394.tar.gz;
     md5 = "a9f072ccefa0d315b325f3e9cdbd4b97";
   };
  
diff --git a/pkgs/tools/misc/man/default.nix b/pkgs/tools/misc/man/default.nix
index cc5166d6648e..deb0f83ad8ad 100644
--- a/pkgs/tools/misc/man/default.nix
+++ b/pkgs/tools/misc/man/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "man-2.4.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/man-db-2.4.3.tar.gz;
+    url = http://savannah.nongnu.org/download/man-db/man-db-2.4.3.tar.gz;
     md5 = "30814a47f209f43b152659ba51fc7937";
   };
   buildInputs = [db4 groff];
diff --git a/pkgs/tools/misc/qtparted/default.nix b/pkgs/tools/misc/qtparted/default.nix
index cebda2dea055..9f56b026f955 100644
--- a/pkgs/tools/misc/qtparted/default.nix
+++ b/pkgs/tools/misc/qtparted/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "qtparted-0.4.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/qtparted-0.4.4.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/qtparted/qtparted-0.4.4.tar.bz2;
     md5 = "b8253bf21eaebe1f2c22b50462e8046c";
   };
   buildInputs = [e2fsprogs ncurses readline parted libXext libX11 zlib qt3];
diff --git a/pkgs/tools/misc/screen/default.nix b/pkgs/tools/misc/screen/default.nix
index 482b6acf0ae0..64eb6ed125cb 100644
--- a/pkgs/tools/misc/screen/default.nix
+++ b/pkgs/tools/misc/screen/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "screen-4.0.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/screen-4.0.2.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/screen/screen-4.0.2.tar.gz;
     md5 = "ed68ea9b43d9fba0972cb017a24940a1";
   };
 
diff --git a/pkgs/tools/misc/xsel/default.nix b/pkgs/tools/misc/xsel/default.nix
index d1e08c338977..5c8d6f37c7c6 100644
--- a/pkgs/tools/misc/xsel/default.nix
+++ b/pkgs/tools/misc/xsel/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "xsel-0.9.6";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xsel-0.9.6.tar.gz;
+    url = http://www.vergenet.net/~conrad/software/xsel/download/xsel-0.9.6.tar.gz;
     md5 = "cec2fb09a4101b7f2beab8094234e2f4";
   };
 
diff --git a/pkgs/tools/networking/cksfv/default.nix b/pkgs/tools/networking/cksfv/default.nix
index 4bf226198330..643355eb5d2e 100644
--- a/pkgs/tools/networking/cksfv/default.nix
+++ b/pkgs/tools/networking/cksfv/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "cksfv-1.3";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/cksfv-1.3.tar.gz;
+    url = http://www.fodder.org/cksfv/cksfv-1.3.tar.gz;
     md5 = "e00cf6a80a566539eb6f3432f2282c38";
   };
 }
diff --git a/pkgs/tools/networking/netcat/default.nix b/pkgs/tools/networking/netcat/default.nix
index 0d134935fc28..5e44de4eb2ed 100644
--- a/pkgs/tools/networking/netcat/default.nix
+++ b/pkgs/tools/networking/netcat/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "netcat-gnu-0.7.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/netcat-0.7.1.tar.bz2;
+    url = http://osdn.dl.sourceforge.net/sourceforge/netcat/netcat-0.7.1.tar.bz2;
     md5 = "0a29eff1736ddb5effd0b1ec1f6fe0ef";
   };
 }
diff --git a/pkgs/tools/networking/p2p/gtk-gnutella/default.nix b/pkgs/tools/networking/p2p/gtk-gnutella/default.nix
index 5199dbde6f90..a0a9e33f0562 100644
--- a/pkgs/tools/networking/p2p/gtk-gnutella/default.nix
+++ b/pkgs/tools/networking/p2p/gtk-gnutella/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "gtk-gnutella-0.96.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gtk-gnutella-0.96.1.tar.bz2;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/gtk-gnutella/gtk-gnutella-0.96.1.tar.bz2;
     md5 = "6529379cc105c1e98f501a67e8e875fd";
   };
   buildInputs = [pkgconfig glib gtk libxml2];
diff --git a/pkgs/tools/networking/par2cmdline/default.nix b/pkgs/tools/networking/par2cmdline/default.nix
index 950fd24b5389..7429f5b68b20 100644
--- a/pkgs/tools/networking/par2cmdline/default.nix
+++ b/pkgs/tools/networking/par2cmdline/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "par2cmdline-0.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/par2cmdline-0.4.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/parchive/par2cmdline-0.4.tar.gz;
     md5 = "1551b63e57e3c232254dc62073b723a9";
   };
 }
diff --git a/pkgs/tools/networking/wget/default.nix b/pkgs/tools/networking/wget/default.nix
index 27428595dbc9..5ae36a4f2155 100644
--- a/pkgs/tools/networking/wget/default.nix
+++ b/pkgs/tools/networking/wget/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "wget-1.10.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/wget-1.10.2.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/wget/wget-1.10.2.tar.gz;
     md5 = "795fefbb7099f93e2d346b026785c4b8";
   };
 
diff --git a/pkgs/tools/security/mktemp/default.nix b/pkgs/tools/security/mktemp/default.nix
index 2b4483479f91..537337a79317 100644
--- a/pkgs/tools/security/mktemp/default.nix
+++ b/pkgs/tools/security/mktemp/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "mktemp-1.5";
   
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/mktemp-1.5.tar.gz;
+    url = ftp://ftp.mktemp.org/pub/mktemp/mktemp-1.5.tar.gz;
     md5 = "9a35c59502a228c6ce2be025fc6e3ff2";
   };
   
diff --git a/pkgs/tools/system/which/default.nix b/pkgs/tools/system/which/default.nix
index 6e938e450091..9305092d5159 100644
--- a/pkgs/tools/system/which/default.nix
+++ b/pkgs/tools/system/which/default.nix
@@ -1,7 +1,7 @@
 {stdenv, fetchurl}: stdenv.mkDerivation {
   name = "which-2.16";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/which-2.16.tar.gz;
+    url = http://ftp.gnu.org/gnu/which/which-2.16.tar.gz;
     md5 = "830b83af48347a9a3520f561e47cbc9b";
   };
 }
diff --git a/pkgs/tools/text/diffutils/default.nix b/pkgs/tools/text/diffutils/default.nix
index 57531c69f295..39aa48353fc6 100644
--- a/pkgs/tools/text/diffutils/default.nix
+++ b/pkgs/tools/text/diffutils/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "diffutils-2.8.1";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/diffutils-2.8.1.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/diffutils/diffutils-2.8.1.tar.gz;
     md5 = "71f9c5ae19b60608f6c7f162da86a428";
   };
   /* If no explicit coreutils is given, use the one from stdenv. */
diff --git a/pkgs/tools/text/enscript/default.nix b/pkgs/tools/text/enscript/default.nix
index 725875e74caf..67dc4302d03f 100644
--- a/pkgs/tools/text/enscript/default.nix
+++ b/pkgs/tools/text/enscript/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "enscript-1.6.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/enscript-1.6.4.tar.gz;
+    url = http://www.iki.fi/mtr/genscript/enscript-1.6.4.tar.gz;
     md5 = "b5174b59e4a050fb462af5dbf28ebba3";
   };
 }
diff --git a/pkgs/tools/text/gawk/default.nix b/pkgs/tools/text/gawk/default.nix
index ccfeb6466a05..2c495f8c2711 100644
--- a/pkgs/tools/text/gawk/default.nix
+++ b/pkgs/tools/text/gawk/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gawk-3.1.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/gawk-3.1.5.tar.bz2;
+    url = ftp://ftp.gnu.org/gnu/gawk/gawk-3.1.5.tar.bz2;
     md5 = "5703f72d0eea1d463f735aad8222655f";
   };
 }
diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index a787fc253a69..15a7a5ad2393 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gnugrep-2.5.1a";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/grep-2.5.1a.tar.bz2;
+    url = http://ftp.gnu.org/gnu/grep/grep-2.5.1a.tar.bz2;
     md5 = "52202fe462770fa6be1bb667bd6cf30c";
   };
   buildInputs = [pcre];
diff --git a/pkgs/tools/text/gnupatch/default.nix b/pkgs/tools/text/gnupatch/default.nix
index 3206e1023fb3..bb1faf214e67 100644
--- a/pkgs/tools/text/gnupatch/default.nix
+++ b/pkgs/tools/text/gnupatch/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gnupatch-2.5.4";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/patch-2.5.4.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/patch/patch-2.5.4.tar.gz;
     md5 = "ee5ae84d115f051d87fcaaef3b4ae782";
   };
 
diff --git a/pkgs/tools/text/gnused/default.nix b/pkgs/tools/text/gnused/default.nix
index 9395fcd1a401..d55639494f05 100644
--- a/pkgs/tools/text/gnused/default.nix
+++ b/pkgs/tools/text/gnused/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "gnused-4.1.5";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/sed-4.1.5.tar.gz;
+    url = ftp://ftp.nluug.nl/pub/gnu/sed/sed-4.1.5.tar.gz;
     md5 = "7a1cbbbb3341287308e140bd4834c3ba";
   };
   # !!! hack: this should go away in gnused > 4.1.5
diff --git a/pkgs/tools/text/groff/default.nix b/pkgs/tools/text/groff/default.nix
index 87b4a0f8228a..fde60a4e5f6a 100644
--- a/pkgs/tools/text/groff/default.nix
+++ b/pkgs/tools/text/groff/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "groff-1.19.2";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/groff-1.19.2.tar.gz;
+    url = ftp://ftp.gnu.org/gnu/groff/groff-1.19.2.tar.gz;
     md5 = "f7c9cf2e4b9967d3af167d7c9fadaae4";
   };
 }
diff --git a/pkgs/tools/text/xml/jing/default.nix b/pkgs/tools/text/xml/jing/default.nix
index f101f0ff7b57..5b7c0803fc8a 100644
--- a/pkgs/tools/text/xml/jing/default.nix
+++ b/pkgs/tools/text/xml/jing/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./unzip-builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/jing-20030619.zip;
+    url = http://www.thaiopensource.com/download/jing-20030619.zip;
     md5 = "f9b0775d8740f16ab3df82ad3707a093";
   };
 
diff --git a/pkgs/tools/text/xml/sablotron/default.nix b/pkgs/tools/text/xml/sablotron/default.nix
index e0aefb5f11a3..a523ebe954c2 100644
--- a/pkgs/tools/text/xml/sablotron/default.nix
+++ b/pkgs/tools/text/xml/sablotron/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "sablotron-1.0.3";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/Sablot-1.0.3.tar.gz;
+    url = http://download-1.gingerall.cz/download/sablot/Sablot-1.0.3.tar.gz;
     md5 = "72654c4b832e7562f8240ea675577f5e";
   };
   buildInputs = [expat];
diff --git a/pkgs/tools/text/xml/trang/default.nix b/pkgs/tools/text/xml/trang/default.nix
index efd2c897dea1..b87a5575d26c 100644
--- a/pkgs/tools/text/xml/trang/default.nix
+++ b/pkgs/tools/text/xml/trang/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/trang-20030619.zip;
+    url = http://www.thaiopensource.com/download/trang-20030619.zip;
     md5 = "9611ea59fda0f62fecc4a5017a72984e";
   };
 
diff --git a/pkgs/tools/typesetting/hevea/default.nix b/pkgs/tools/typesetting/hevea/default.nix
index 32fbda84becd..dfa8a43974a0 100644
--- a/pkgs/tools/typesetting/hevea/default.nix
+++ b/pkgs/tools/typesetting/hevea/default.nix
@@ -2,7 +2,7 @@
   name = "hevea-1.07";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/hevea-1.07.tar.gz;
+    url = http://pauillac.inria.fr/~maranget/hevea/distri/hevea-1.07.tar.gz;
     md5 = "561d7a2c10ea9e6a5b352c24d9b65998";
   };
   buildInputs = [ocaml];
diff --git a/pkgs/tools/typesetting/xmlroff/default.nix b/pkgs/tools/typesetting/xmlroff/default.nix
index 73712c3fdfd8..3c2eb728ec7d 100644
--- a/pkgs/tools/typesetting/xmlroff/default.nix
+++ b/pkgs/tools/typesetting/xmlroff/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   #name = "xmlroff-0.3.5";
   name = "xmlroff-0.3.98";
   src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/xmlroff-0.3.98.tar.gz;
+    url = http://surfnet.dl.sourceforge.net/sourceforge/xmlroff/xmlroff-0.3.98.tar.gz;
     md5 = "6c1d05b6480e98870751bf9102ea68e2";
   };
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index fee9f6d1306f..61d57d87b8fc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2058,7 +2058,7 @@ rec {
   perlCGISession = import ../development/perl-modules/generic perl {
     name = "CGI-Session-3.95";
     src = fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/CGI-Session-3.95.tar.gz;
+      url = http://search.cpan.org/CPAN/authors/id/S/SH/SHERZODR/CGI-Session-3.95.tar.gz;
       md5 = "fe9e46496c7c711c54ca13209ded500b";
     };
   };
@@ -2078,7 +2078,7 @@ rec {
   perlDigestSHA1 = import ../development/perl-modules/generic perl {
     name = "Digest-SHA1-2.11";
     src = fetchurl {
-      url = http://nix.cs.uu.nl/dist/tarballs/Digest-SHA1-2.11.tar.gz;
+      url = http://search.cpan.org/CPAN/authors/id/G/GA/GAAS/Digest-SHA1-2.11.tar.gz;
       md5 = "2449bfe21d6589c96eebf94dae24df6b";
     };
   };