diff --git a/pkgs/desktops/kde-4/base/default.nix b/pkgs/desktops/kde-4/base/default.nix
index 451dd4863c3..ea4ee603c02 100644
--- a/pkgs/desktops/kde-4/base/default.nix
+++ b/pkgs/desktops/kde-4/base/default.nix
@@ -3,9 +3,9 @@ args: with args;
 stdenv.mkDerivation {
   name = "kdebase-4.0.0";
   #builder = ./builder.sh;
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdebase-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdebase-4.0.0.tar.bz2;
     md5 = "01d8f2f16cbd4e225efc996b0dd39769";
   };
 
diff --git a/pkgs/desktops/kde-4/edu/default.nix b/pkgs/desktops/kde-4/edu/default.nix
index 0cf140a5de9..74fe8b195bc 100644
--- a/pkgs/desktops/kde-4/edu/default.nix
+++ b/pkgs/desktops/kde-4/edu/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation rec {
   name = "kdeedu-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdeedu-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdeedu-4.0.0.tar.bz2;
     md5 = "73924e158e4a2de2107be441c808251f";
   };
 
diff --git a/pkgs/desktops/kde-4/games/default.nix b/pkgs/desktops/kde-4/games/default.nix
index 8f3b6c0ec48..4c3c1c115f0 100644
--- a/pkgs/desktops/kde-4/games/default.nix
+++ b/pkgs/desktops/kde-4/games/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdegames-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdegames-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdegames-4.0.0.tar.bz2;
     md5 = "6264c0034f6389a2807a4e1723ba1c81";
   };
 
diff --git a/pkgs/desktops/kde-4/graphics/default.nix b/pkgs/desktops/kde-4/graphics/default.nix
index 6ab84fd8eff..e67551fddb7 100644
--- a/pkgs/desktops/kde-4/graphics/default.nix
+++ b/pkgs/desktops/kde-4/graphics/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdegraphics-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdegraphics-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdegraphics-4.0.0.tar.bz2;
     md5 = "6cad7b165d99c43d1a19a0350598821c";
   };
 
diff --git a/pkgs/desktops/kde-4/libs/default.nix b/pkgs/desktops/kde-4/libs/default.nix
index 91f722ec658..d0995429afe 100644
--- a/pkgs/desktops/kde-4/libs/default.nix
+++ b/pkgs/desktops/kde-4/libs/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation rec {
   name = "kdelibs-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdelibs-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdelibs-4.0.0.tar.bz2;
     md5 = "79d0f83ca81fc4a135663943340c0b8f";
   };
 
diff --git a/pkgs/desktops/kde-4/multimedia/default.nix b/pkgs/desktops/kde-4/multimedia/default.nix
index f1f7994ce1a..c23439b5fc0 100644
--- a/pkgs/desktops/kde-4/multimedia/default.nix
+++ b/pkgs/desktops/kde-4/multimedia/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdemultimedia-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdemultimedia-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdemultimedia-4.0.0.tar.bz2;
     md5 = "0bf1cd18a23017a37324d9f8c4902e19";
   };
 
diff --git a/pkgs/desktops/kde-4/network/default.nix b/pkgs/desktops/kde-4/network/default.nix
index f99f2184bca..f006c4c5921 100644
--- a/pkgs/desktops/kde-4/network/default.nix
+++ b/pkgs/desktops/kde-4/network/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdenetwork-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdenetwork-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdenetwork-4.0.0.tar.bz2;
     md5 = "f362bd34b589800845abfb99589d4cfc";
   };
 
diff --git a/pkgs/desktops/kde-4/pimlibs/default.nix b/pkgs/desktops/kde-4/pimlibs/default.nix
index 30c6ca6250b..6a61374a774 100644
--- a/pkgs/desktops/kde-4/pimlibs/default.nix
+++ b/pkgs/desktops/kde-4/pimlibs/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdepimlibs-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdepimlibs-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdepimlibs-4.0.0.tar.bz2;
     md5 = "1a68662230fcd4ec8cea90bb780f920e";
   };
 
diff --git a/pkgs/desktops/kde-4/runtime/default.nix b/pkgs/desktops/kde-4/runtime/default.nix
index 7b9d16bdc45..8e31bce32fd 100644
--- a/pkgs/desktops/kde-4/runtime/default.nix
+++ b/pkgs/desktops/kde-4/runtime/default.nix
@@ -3,9 +3,9 @@ args: with args;
 stdenv.mkDerivation {
   name = "kdebase-runtime-4.0.0";
   builder = ./builder.sh;
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdebase-runtime-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdebase-runtime-4.0.0.tar.bz2;
     md5 = "da93f59497ff90ad01bd4ab9b458f6cb";
   };
 
diff --git a/pkgs/desktops/kde-4/toys/default.nix b/pkgs/desktops/kde-4/toys/default.nix
index 39933f0b131..b88afded411 100644
--- a/pkgs/desktops/kde-4/toys/default.nix
+++ b/pkgs/desktops/kde-4/toys/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdetoys-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdetoys-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdetoys-4.0.0.tar.bz2;
     md5 = "6e4e2eea3d87718f48716f975b48ada2";
   };
 
diff --git a/pkgs/desktops/kde-4/utils/default.nix b/pkgs/desktops/kde-4/utils/default.nix
index 2b256a8e768..4372bac8758 100644
--- a/pkgs/desktops/kde-4/utils/default.nix
+++ b/pkgs/desktops/kde-4/utils/default.nix
@@ -2,9 +2,9 @@ args: with args;
 
 stdenv.mkDerivation {
   name = "kdeutils-4.0.0";
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdeutils-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdeutils-4.0.0.tar.bz2;
     md5 = "5815625f215ff3be47a21074d2c047a0";
   };
 
diff --git a/pkgs/desktops/kde-4/workspace/default.nix b/pkgs/desktops/kde-4/workspace/default.nix
index 70d2b3eddc3..041cd897765 100644
--- a/pkgs/desktops/kde-4/workspace/default.nix
+++ b/pkgs/desktops/kde-4/workspace/default.nix
@@ -3,9 +3,9 @@ args: with args;
 stdenv.mkDerivation {
   name = "kdebase-workspace-4.0.0";
   builder = ./builder.sh;
-  
+
   src = fetchurl {
-    url = http://download.kde.org/stable/4.0.0/src/kdebase-workspace-4.0.0.tar.bz2;
+    url = mirror://kde/stable/4.0.0/src/kdebase-workspace-4.0.0.tar.bz2;
     md5 = "f3d2155ff5ff7472a8884bd3f31bff16";
   };