diff --git a/pkgs/applications/audio/snd/default.nix b/pkgs/applications/audio/snd/default.nix
index c295767687f..fe32aca029b 100644
--- a/pkgs/applications/audio/snd/default.nix
+++ b/pkgs/applications/audio/snd/default.nix
@@ -27,7 +27,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/snd/snd-${version}.tar.gz";
+    url = "mirror://sourceforge/snd/snd-${version}.tar.gz";
     sha256 = "0zqgfnkvkqxby1k74mwba1r4pb520glcsz5jjmpzm9m41nqnghmm";
   };
 
diff --git a/pkgs/applications/editors/emacs-modes/php/default.nix b/pkgs/applications/editors/emacs-modes/php/default.nix
index ec160dccd9f..2b3cf7b2971 100644
--- a/pkgs/applications/editors/emacs-modes/php/default.nix
+++ b/pkgs/applications/editors/emacs-modes/php/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "php-mode-1.5.0";
 
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/php-mode/${name}.tar.gz";
+    url = "mirror://sourceforge/php-mode/${name}.tar.gz";
     sha256 = "1bffgg4rpiggxqc1hvjcby24sfyzj5728zg7r6f4v6a126a7kcfq";
   };
 
diff --git a/pkgs/applications/editors/emacs-modes/session-management-for-emacs/default.nix b/pkgs/applications/editors/emacs-modes/session-management-for-emacs/default.nix
index 185bc20021e..0d2fcf09786 100644
--- a/pkgs/applications/editors/emacs-modes/session-management-for-emacs/default.nix
+++ b/pkgs/applications/editors/emacs-modes/session-management-for-emacs/default.nix
@@ -4,8 +4,7 @@ stdenv.mkDerivation rec {
   name = "session-management-for-emacs-2.2a";
   
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/project/emacs-session/session/2.2a/session-2.2a.tar.gz";
-#    url = "mirror://sourceforge.net/sourceforge/emacs-session/session-2.2a.tar.gz";
+    url = "mirror://sourceforge/emacs-session/session-2.2a.tar.gz";
     sha256 = "37dfba7420b5164eab90dafa9e8bf9a2c8f76505fe2fefa14a64e81fa76d0144";
   };
 
diff --git a/pkgs/applications/graphics/gimp/plugins/default.nix b/pkgs/applications/graphics/gimp/plugins/default.nix
index bdb4fa631f0..d314d93ea4c 100644
--- a/pkgs/applications/graphics/gimp/plugins/default.nix
+++ b/pkgs/applications/graphics/gimp/plugins/default.nix
@@ -107,7 +107,7 @@ rec {
     name = "texturize-2.1";
     buildInputs = [ gimp ] ++ gimp.nativeBuildInputs;
     src = fetchurl {
-      url = http://prdownloads.sourceforge.net/gimp-texturize/texturize-2.1_src.tgz;
+      url = mirror://sourceforge/gimp-texturize/texturize-2.1_src.tgz;
       sha256 = "0cdjq25g3yfxx6bzx6nid21kq659s1vl9id4wxyjs2dhcv229cg3";
     };
     installPhase = "installPlugins src/texturize";
diff --git a/pkgs/applications/misc/rxvt/default.nix b/pkgs/applications/misc/rxvt/default.nix
index 13597f3ee9b..c3b5fc861a8 100644
--- a/pkgs/applications/misc/rxvt/default.nix
+++ b/pkgs/applications/misc/rxvt/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "rxvt-2.6.4";
 
   src = fetchurl {
-    url = http://downloads.sourceforge.net/rxvt/rxvt-2.6.4.tar.gz;
+    url = mirror://sourceforge/rxvt/rxvt-2.6.4.tar.gz;
     sha256 = "0hi29whjv8v11nkjbq1i6ms411v6csykghmlpkmayfjn9nxr02xg";
   };
 
diff --git a/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/pidgin-latex-sf.nix b/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/pidgin-latex-sf.nix
index 868b5dbb342..7f7d5abccfd 100644
--- a/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/pidgin-latex-sf.nix
+++ b/pkgs/applications/networking/instant-messengers/pidgin-plugins/pidgin-latex/pidgin-latex-sf.nix
@@ -1,7 +1,7 @@
 args : with args; 
 rec {
   src = fetchurl {
-    url = http://mesh.dl.sourceforge.net/sourceforge/pidgin-latex/pidgin-latex-1.2.1.tar.bz2;
+    url = mirror://sourceforge/pidgin-latex/pidgin-latex-1.2.1.tar.bz2;
     sha256 = "19h76fwsx5y30l5wda2930k10r385aipngfljz5bdi7b9y52lii7";
   };
 
diff --git a/pkgs/data/fonts/wqy-zenhei/default.nix b/pkgs/data/fonts/wqy-zenhei/default.nix
index 698ecc53046..960c74f6841 100644
--- a/pkgs/data/fonts/wqy-zenhei/default.nix
+++ b/pkgs/data/fonts/wqy-zenhei/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "wqy-zenhei-0.4.23-1";
 
   src = fetchurl {
-    url = http://prdownloads.sourceforge.net/wqy/wqy-zenhei-0.4.23-1.tar.gz;
+    url = mirror://sourceforge/wqy/wqy-zenhei-0.4.23-1.tar.gz;
     sha256 = "138nn81ai240av0xvcq4ab3rl73n0qlj3gwr3a36i63ry8vdj5qm";
   };
 
diff --git a/pkgs/development/compilers/yap/default.nix b/pkgs/development/compilers/yap/default.nix
index 753c0f8ee77..f9a48468df3 100644
--- a/pkgs/development/compilers/yap/default.nix
+++ b/pkgs/development/compilers/yap/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "yap-5.1.1";
 
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/yap/Yap-5.1.1.tar.gz";
+    url = "mirror://sourceforge/yap/Yap-5.1.1.tar.gz";
     sha256 = "0bajxmlla9gay4m4l7y7x6qldxzi0jcq2ykgpjk9liky7g5kbnya";
   };
 
diff --git a/pkgs/development/libraries/ode/default.nix b/pkgs/development/libraries/ode/default.nix
index 31b2aa7dad9..e7368e4f60b 100644
--- a/pkgs/development/libraries/ode/default.nix
+++ b/pkgs/development/libraries/ode/default.nix
@@ -10,7 +10,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/opende/ode-${version}.tar.bz2";
+    url = "mirror://sourceforge/opende/ode-${version}.tar.bz2";
     sha256 = "1883gbsnn7zldrpwfdh6kwj20g627n5bspz3yb2z6lrxdal88y47";
   };
 
diff --git a/pkgs/development/libraries/openexr_ctl/default.nix b/pkgs/development/libraries/openexr_ctl/default.nix
index 1b15fdb6c9e..cd26aae660c 100644
--- a/pkgs/development/libraries/openexr_ctl/default.nix
+++ b/pkgs/development/libraries/openexr_ctl/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "openexr_ctl-1.0.1";
 
   src = fetchurl {
-    url = http://kent.dl.sourceforge.net/sourceforge/ampasctl/openexr_ctl-1.0.1.tar.gz;
+    url = mirror://sourceforge/ampasctl/openexr_ctl-1.0.1.tar.gz;
     sha256 = "1jg9smpaplal8l14djp184wzk11nwd3dvm4lhkp69kjgw8jdd21d";
   };
 
diff --git a/pkgs/development/python-modules/irclib/default.nix b/pkgs/development/python-modules/irclib/default.nix
index c840e0a1003..3e0eda34b17 100644
--- a/pkgs/development/python-modules/irclib/default.nix
+++ b/pkgs/development/python-modules/irclib/default.nix
@@ -9,7 +9,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://prdownloads.sourceforge.net/sourceforge/python-irclib/python-irclib-${version}.tar.gz";
+    url = "mirror://sourceforge/python-irclib/python-irclib-${version}.tar.gz";
     sha256 = "1x5456y4rbxmnw4yblhb4as5791glcw394bm36px3x6l05j3mvl1";
   };
   patches = [(fetchurl {
diff --git a/pkgs/development/python-modules/xmpppy/default.nix b/pkgs/development/python-modules/xmpppy/default.nix
index df5d37853f7..57b35ad91ed 100644
--- a/pkgs/development/python-modules/xmpppy/default.nix
+++ b/pkgs/development/python-modules/xmpppy/default.nix
@@ -9,7 +9,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://prdownloads.sourceforge.net/sourceforge/xmpppy/xmpppy-${version}.tar.gz";
+    url = "mirror://sourceforge/xmpppy/xmpppy-${version}.tar.gz";
     sha256 = "16hbh8kwc5n4qw2rz1mrs8q17rh1zq9cdl05b1nc404n7idh56si";
   };
 
diff --git a/pkgs/development/tools/misc/openocd/default.nix b/pkgs/development/tools/misc/openocd/default.nix
index c87bd9d5535..e0da284887c 100644
--- a/pkgs/development/tools/misc/openocd/default.nix
+++ b/pkgs/development/tools/misc/openocd/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation rec {
   version = "0.7.0";
 
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/project/openocd/openocd/${version}/openocd-${version}.tar.bz2";
+    url = "mirror://sourceforge/openocd/openocd-${version}.tar.bz2";
     sha256 = "0qwfyd821sy5p0agz0ybgn5nd7vplipw4mhm485ldj1hcmw7n8sj";
   };
 
diff --git a/pkgs/os-specific/linux/firmware/zd1211/default.nix b/pkgs/os-specific/linux/firmware/zd1211/default.nix
index a717bd9e117..cb4466dc20f 100644
--- a/pkgs/os-specific/linux/firmware/zd1211/default.nix
+++ b/pkgs/os-specific/linux/firmware/zd1211/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
   name = "${pname}-${version}";
   
   src = fetchurl {
-    url = "http://surfnet.dl.sourceforge.net/sourceforge/zd1211/${name}.tar.bz2";
+    url = "mirror://sourceforge/zd1211/${name}.tar.bz2";
     sha256 = "866308f6f59f7075f075d4959dff2ede47735c751251fecd1496df1ba4d338e1";
   };
   
diff --git a/pkgs/os-specific/linux/statifier/default.nix b/pkgs/os-specific/linux/statifier/default.nix
index 4e28dce1670..b4e37a36ff5 100644
--- a/pkgs/os-specific/linux/statifier/default.nix
+++ b/pkgs/os-specific/linux/statifier/default.nix
@@ -9,7 +9,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://sourceforge.net/projects/statifier/files/statifier/statifier-${version}.tar.gz";
+    url = "mirror://sourceforge/statifier/statifier-${version}.tar.gz";
     sha256 = "0lhdbp7hc15nn6r31yxx7i993a5k8926n5r6j2gi2vvkmf1hciqf";
   };
 
diff --git a/pkgs/servers/rpcbind/default.nix b/pkgs/servers/rpcbind/default.nix
index 33965299a9b..8d8a677647c 100644
--- a/pkgs/servers/rpcbind/default.nix
+++ b/pkgs/servers/rpcbind/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation rec {
   name = "rpcbind-0.2.0";
   
   src = fetchurl {
-    url = "http://freefr.dl.sourceforge.net/project/rpcbind/rpcbind/0.2.0/rpcbind-0.2.0.tar.bz2";
+    url = "mirror://sourceforge/rpcbind/rpcbind-0.2.0.tar.bz2";
     sha256 = "c92f263e0353887f16379d7708ef1fb4c7eedcf20448bc1e4838f59497a00de3";
   };
 
diff --git a/pkgs/servers/sabnzbd/default.nix b/pkgs/servers/sabnzbd/default.nix
index 50e07f27329..599f6ee31f3 100644
--- a/pkgs/servers/sabnzbd/default.nix
+++ b/pkgs/servers/sabnzbd/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "sabnzbd-0.4.12";
   
   src = fetchurl {
-    url = http://mesh.dl.sourceforge.net/project/sabnzbdplus/sabnzbdplus/sabnzbd-0.4.12/SABnzbd-0.4.12-src.tar.gz;
+    url = mirro://sourceforge/sabnzbdplus/SABnzbd-0.4.12-src.tar.gz;
     sha256 = "35ce4172688925ef608fba433ff676357dab7d2abdc1cf83112a1c99682fdd32";
   };
 
diff --git a/pkgs/servers/xmpp/pyIRCt/default.nix b/pkgs/servers/xmpp/pyIRCt/default.nix
index 27982601f73..422ddd8c73d 100644
--- a/pkgs/servers/xmpp/pyIRCt/default.nix
+++ b/pkgs/servers/xmpp/pyIRCt/default.nix
@@ -9,7 +9,7 @@ let
 in
 rec {
   src = fetchurl {
-    url = "http://prdownloads.sourceforge.net/sourceforge/xmpppy/irc-transport-${version}.tar.gz";
+    url = "mirror://sourceforge/xmpppy/irc-transport-${version}.tar.gz";
     sha256 = "0gbc0dvj1p3088b6x315yjrlwnc5vvzp0var36wlf9z60ghvk8yb";
   };
 
diff --git a/pkgs/tools/admin/webdruid/src-for-default.nix b/pkgs/tools/admin/webdruid/src-for-default.nix
index edc770a5fbb..73102be6afe 100644
--- a/pkgs/tools/admin/webdruid/src-for-default.nix
+++ b/pkgs/tools/admin/webdruid/src-for-default.nix
@@ -1,7 +1,7 @@
 rec {
   advertisedUrl="http://downloads.sourceforge.net/webdruid/files/webdruid/0.6.0-alpha5/webdruid-0.6.0-alpha5.tar.gz";
   version = "0.6.0-alpha5";
-  url="http://downloads.sourceforge.net/webdruid/files/webdruid/${version}/webdruid-${version}.tar.gz";
+  url="mirror://sourceforge/webdruid/webdruid-${version}.tar.gz";
   hash = "1aiqffccayvf02snl9la62zqb1674cp4rv19af6xyxgvw4334hw0";
   name = "webdruid-0.6.0-alpha5";
   
diff --git a/pkgs/tools/backup/partimage/default.nix b/pkgs/tools/backup/partimage/default.nix
index d06ef2c8366..009dc90576b 100644
--- a/pkgs/tools/backup/partimage/default.nix
+++ b/pkgs/tools/backup/partimage/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   enableParallelBuilding = true;
 
   src = fetchurl {
-    url = http://sourceforge.net/projects/partimage/files/stable/0.6.9/partimage-0.6.9.tar.bz2;
+    url = mirror://sourceforge/partimage/partimage-0.6.9.tar.bz2;
     sha256 = "0db6xiphk6xnlpbxraiy31c5xzj0ql6k4rfkmqzh665yyj0nqfkm";
   };
   configureFlags = "--with-ssl-headers=${openssl}/include/openssl";
diff --git a/pkgs/tools/compression/upx/default.nix b/pkgs/tools/compression/upx/default.nix
index f3b8037a9f1..4df2947d137 100644
--- a/pkgs/tools/compression/upx/default.nix
+++ b/pkgs/tools/compression/upx/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "upx-3.07";
   src = fetchurl {
-    url = http://upx.sourceforge.net/download/upx-3.07-src.tar.bz2;
+    url = mirror://sourceforge/upx/upx-3.07-src.tar.bz2;
     sha256 = "07pcgjn7x0a734mvhgqwz24qkm1rzqrkcp67pmagzz6i765cp7bs";
   };
 
diff --git a/pkgs/tools/graphics/pstoedit/default.nix b/pkgs/tools/graphics/pstoedit/default.nix
index b3d75106980..efdeffe1ad7 100644
--- a/pkgs/tools/graphics/pstoedit/default.nix
+++ b/pkgs/tools/graphics/pstoedit/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "pstoedit-3.50";
 
   src = fetchurl {
-    url = http://prdownloads.sourceforge.net/pstoedit/pstoedit-3.50.tar.gz;
+    url = mirror://sourceforge/pstoedit/pstoedit-3.50.tar.gz;
     sha256 = "04ap21fxj2zn6vj9mv7zknj4svcbkb1gxwfzxkw5i0sksx969c92";
   };
 
diff --git a/pkgs/tools/misc/ttf2pt1/default.nix b/pkgs/tools/misc/ttf2pt1/default.nix
index 659b04a6238..5a03e099539 100644
--- a/pkgs/tools/misc/ttf2pt1/default.nix
+++ b/pkgs/tools/misc/ttf2pt1/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "ttf2pt1-3.4.4";
 
   src = fetchurl {
-    url = http://prdownloads.sourceforge.net/ttf2pt1/ttf2pt1-3.4.4.tgz;
+    url = mirror://sourceforge/ttf2pt1/ttf2pt1-3.4.4.tgz;
     sha256 = "1l718n4k4widx49xz7qrj4mybzb8q67kp2jw7f47604ips4654mf";
   };
 
diff --git a/pkgs/tools/networking/philter/default.nix b/pkgs/tools/networking/philter/default.nix
index 7457a72b5d5..af5b9aacffc 100644
--- a/pkgs/tools/networking/philter/default.nix
+++ b/pkgs/tools/networking/philter/default.nix
@@ -13,7 +13,7 @@ let
     baseName="philter";
     version="1.1";
     name="${baseName}-${version}";
-    url="http://prdownloads.sourceforge.net/${baseName}/${name}.tar.gz";
+    url="mirror://sourceforge/${baseName}/${name}.tar.gz";
     hash="177pqfflhdn2mw9lc1wv9ik32ji69rjqr6dw83hfndwlsva5151l";
   };
 in
diff --git a/pkgs/tools/security/pwgen/default.nix b/pkgs/tools/security/pwgen/default.nix
index ecbc95362e6..aaa3b577657 100644
--- a/pkgs/tools/security/pwgen/default.nix
+++ b/pkgs/tools/security/pwgen/default.nix
@@ -3,7 +3,7 @@ stdenv.mkDerivation {
   name = "pwgen-2.05";
 
   src = fetchurl {
-    url = ftp://ftp.chg.ru/pub/sourceforge/p/pw/pwgen/pwgen-2.05.tar.gz;
+    url = mirror://sourceforge/pwgen/pwgen-2.05.tar.gz;
     sha256 = "1afxbkdl9b81760pyb972k18dmidrciy3vzcnspp3jg0aa316yn8";
   };
   meta = {
diff --git a/pkgs/tools/system/thinkfan/default.nix b/pkgs/tools/system/thinkfan/default.nix
index a13f500c34f..63850454b3d 100644
--- a/pkgs/tools/system/thinkfan/default.nix
+++ b/pkgs/tools/system/thinkfan/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
   name = "thinkfan-${version}";
 
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/project/thinkfan/thinkfan-${version}.tar.gz";
+    url = "mirror://sourceforge/thinkfan/thinkfan-${version}.tar.gz";
     sha256 = "04akla66r8k10x0jvmcpfi92hj2sppygcl7hhwn8n8zsvvf0yqxs";
   };
   
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d080e913399..5fbe0ea553f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1956,7 +1956,7 @@ pythonPackages = python.modules // rec {
     name = "${baseName}-${version}";
 
     src = fetchurl {
-      url = "http://downloads.sourceforge.net/sourceforge/fuse/fuse-python-${version}.tar.gz";
+      url = "mirror://sourceforge/fuse/fuse-python-${version}.tar.gz";
       sha256 = "06rmp1ap6flh64m81j0n3a357ij2vj9zwcvvw0p31y6hz1id9shi";
     };
 
@@ -2564,7 +2564,7 @@ pythonPackages = python.modules // rec {
   matplotlib = buildPythonPackage ( rec {
     name = "matplotlib-1.1.0";
     src = fetchurl {
-      url = "http://downloads.sourceforge.net/matplotlib/${name}.tar.gz";
+      url = "mirror://sourceforge/matplotlib/${name}.tar.gz";
       sha256 = "be37e1d86c65ecacae6683f8805e051e9904e5f2e02bf2b7a34262c46a6d06a7";
     };
 
@@ -3314,7 +3314,7 @@ pythonPackages = python.modules // rec {
     name = "pexpect-2.3";
 
     src = fetchurl {
-      url = "http://pexpect.sourceforge.net/pexpect-2.3.tar.gz";
+      url = "mirror://sourceforge/pexpect/pexpect-2.3.tar.gz";
       sha256 = "0x8bfjjqygriry1iyygm5048ykl5qpbpzqfp6i8dhkslm3ryf5fk";
     };