diff --git a/maintainers/scripts/evacuate-urls.sh b/maintainers/scripts/evacuate-urls.sh
index 04fdfd89bde3..3aa368ec6682 100755
--- a/maintainers/scripts/evacuate-urls.sh
+++ b/maintainers/scripts/evacuate-urls.sh
@@ -9,7 +9,7 @@ find "$1" -name "*.nix" | while read fn; do
         if url=$(echo "$line" | sed 's^url = \(.*\);^\1^'); then
 
             if ! echo "$url" | grep -q -E "www.cs.uu.nl|nix.cs.uu.nl|.stratego-language.org|java.sun.com|ut2004|linuxq3a|RealPlayer|Adbe|belastingdienst|microsoft|armijn/.nix|sun.com|archive.eclipse.org"; then
-                base=$(basename $url)
+                base="$(basename "$url")"
                 newPath="$distDir/$base"
 
 		if test -e "$newPath"; then
@@ -20,7 +20,11 @@ find "$1" -name "*.nix" | while read fn; do
 		    if test -z "$hash"; then
 			hash=$(fgrep -A 1 "$url" "$fn" | grep sha256 | sed 's^.*sha256 = \"\(.*\)\";.*^\1^')
 			hashType="sha256 --base32"
-			if test -z "$hash"; then
+			if test -n "$hash"; then
+			    if test "${#hash}" = 64; then
+				hash=$(nix-hash --to-base32 --type sha256 $hash)
+			    fi
+			else
 			    hash=$(fgrep -A 1 "$url" "$fn" | grep sha1 | sed 's^.*sha1 = \"\(.*\)\";.*^\1^')
 			    hashType="sha1"
 			    if test -z "$hash"; then
@@ -31,13 +35,13 @@ find "$1" -name "*.nix" | while read fn; do
 		    fi
 		    #echo "HASH = $hash"
 		    if ! test "$(nix-hash --type $hashType --flat "$newPath")" = "$hash"; then
-			echo "WARNING: $fn: $newPath exists and differs!"
+			echo "WARNING: $fn: $newPath exists and differs, hash should be $hash!"
 			continue
 		    fi
 
 		else
 
-		    if echo $url | grep -q '^mirror://'; then
+		    if echo $url | grep -q 'mirror://'; then
 			#echo "$fn: skipping mirrored $url"
 			continue
 		    fi
@@ -74,4 +78,6 @@ find "$1" -name "*.nix" | while read fn; do
     
     done
 
-done
\ No newline at end of file
+done
+
+echo DONE
\ No newline at end of file
diff --git a/pkgs/applications/audio/GStreamer/default.nix b/pkgs/applications/audio/GStreamer/default.nix
index 607d2e9ce9fe..0239b29f7ee2 100644
--- a/pkgs/applications/audio/GStreamer/default.nix
+++ b/pkgs/applications/audio/GStreamer/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "GStreamer-0.10.10";
   src = fetchurl {
     url = http://gstreamer.freedesktop.org/src/gstreamer/gstreamer-0.10.10.tar.bz2;
-    md5 = "6875bf0bd3cf38b9ae1362b9e644e6fc" ;
+    md5 = "6875bf0bd3cf38b9ae1362b9e644e6fc";
   };
 
   buildInputs = [perl bison flex glib pkgconfig libxml2];
diff --git a/pkgs/applications/audio/cdparanoia/default.nix b/pkgs/applications/audio/cdparanoia/default.nix
index 0d741899cdf2..e8d317726117 100644
--- a/pkgs/applications/audio/cdparanoia/default.nix
+++ b/pkgs/applications/audio/cdparanoia/default.nix
@@ -3,8 +3,8 @@
 stdenv.mkDerivation {
   name = "cdparanoia-III-alpha9.8";
   src = fetchurl {
-    url = http://downloads.xiph.org/releases/cdparanoia/cdparanoia-III-alpha9.8.src.tgz ;
-    md5 = "7218e778b5970a86c958e597f952f193" ;
+    url = http://downloads.xiph.org/releases/cdparanoia/cdparanoia-III-alpha9.8.src.tgz;
+    md5 = "7218e778b5970a86c958e597f952f193";
   };
   
   patches = [./fix.patch];
diff --git a/pkgs/applications/audio/flac/default.nix b/pkgs/applications/audio/flac/default.nix
index 6d6b07348ff9..58c11aaa0f81 100644
--- a/pkgs/applications/audio/flac/default.nix
+++ b/pkgs/applications/audio/flac/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "flac-1.1.2";
   src = fetchurl {
     url = http://downloads.xiph.org/releases/flac/flac-1.1.2.tar.gz;
-    md5 = "2bfc127cdda02834d0491ab531a20960" ;
+    md5 = "2bfc127cdda02834d0491ab531a20960";
   };
 
   buildInputs = [libogg] ;
diff --git a/pkgs/applications/editors/emacs-unicode/default.nix b/pkgs/applications/editors/emacs-unicode/default.nix
index 0a6a1389bbd8..dbacd3e20b9f 100644
--- a/pkgs/applications/editors/emacs-unicode/default.nix
+++ b/pkgs/applications/editors/emacs-unicode/default.nix
@@ -39,6 +39,6 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Emacs with Unicode, GTK and Xft support (23.x alpha)";
-    url = http://www.emacswiki.org/cgi-bin/wiki/XftGnuEmacs;
+    homepage = http://www.emacswiki.org/cgi-bin/wiki/XftGnuEmacs;
   };
 }
diff --git a/pkgs/applications/graphics/feh/default.nix b/pkgs/applications/graphics/feh/default.nix
index f234432dc560..f79cfd6f176f 100644
--- a/pkgs/applications/graphics/feh/default.nix
+++ b/pkgs/applications/graphics/feh/default.nix
@@ -25,6 +25,6 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A light-weight image viewer";
-    url = http://linuxbrit.co.uk/feh/;
+    homepage = http://linuxbrit.co.uk/feh/;
   };
 }
diff --git a/pkgs/applications/graphics/gimp/default.nix b/pkgs/applications/graphics/gimp/default.nix
index 58444075f98a..e2e962662f48 100644
--- a/pkgs/applications/graphics/gimp/default.nix
+++ b/pkgs/applications/graphics/gimp/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
   name = "gimp-2.4.0-rc1";
   src = fetchurl {
     url = ftp://ftp.gtk.org/pub/gimp/v2.4/testing/gimp-2.4.0-rc1.tar.bz2;
-    sha256 = "0n9gfmmxjjhi4dpdfwc37z8n4zsyx6byil1ig27agjgic22bydm1" ;
+    sha256 = "0n9gfmmxjjhi4dpdfwc37z8n4zsyx6byil1ig27agjgic22bydm1";
   };
   
   buildInputs = [
diff --git a/pkgs/applications/misc/mrxvt/default.nix b/pkgs/applications/misc/mrxvt/default.nix
index ed52a19be4c1..aaabef2b6b8c 100644
--- a/pkgs/applications/misc/mrxvt/default.nix
+++ b/pkgs/applications/misc/mrxvt/default.nix
@@ -1,4 +1,5 @@
 args: with args.lib; with args;
+
 let
   co = chooseOptionsByFlags {
     inherit args;
@@ -14,16 +15,15 @@ in args.stdenv.mkDerivation {
   inherit (co) buildInputs configureFlags;
 
   src = args.fetchurl {
-    url = http://downloads.sourceforge.net/materm/mrxvt-0.5.3.tar.gz?modtime=1187784483&big_mirror=0;
-    name="mrxvt-0.5.3.tar.gz";
+    url = mirror://sourceforge/materm/mrxvt-0.5.3.tar.gz;
     sha256 = "04flnn58hp4qvvk6jzyipsj13v1qyrjabgbw5laz5cqxvxzpncp2";
   };
 
   name = "mrxvt-0.5.3";
 
   meta = { 
-      description = "multitabbed lightweight terminal emulator basd on rxvt supporting transparency, backgroundimages, freetype fonts,..";
-      homepage = http://sourceforge.net/projects/materm;
-      license = "GPL";
-    };
+    description = "multitabbed lightweight terminal emulator basd on rxvt supporting transparency, backgroundimages, freetype fonts,..";
+    homepage = http://sourceforge.net/projects/materm;
+    license = "GPL";
+  };
 }
diff --git a/pkgs/applications/networking/browsers/elinks/default.nix b/pkgs/applications/networking/browsers/elinks/default.nix
index 7b7c14819925..75db8f04f948 100644
--- a/pkgs/applications/networking/browsers/elinks/default.nix
+++ b/pkgs/applications/networking/browsers/elinks/default.nix
@@ -10,8 +10,9 @@ stdenv.mkDerivation {
 
   buildInputs = [ python perl ncurses x11 zlib openssl ];
   configureFlags = "--with-perl --with-python";
+
   meta = {
-	  description = "Full-Featured Text WWW Browser";
-	  homepage = http://elinks.or.cz;
+    description = "Full-Featured Text WWW Browser";
+    homepage = http://elinks.or.cz;
   };
 }
diff --git a/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer-9/default.nix b/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer-9/default.nix
index d2f4210a6f50..d6972ac2f79c 100644
--- a/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer-9/default.nix
+++ b/pkgs/applications/networking/browsers/mozilla-plugins/flashplayer-9/default.nix
@@ -8,8 +8,7 @@ assert stdenv.system == "i686-linux";
   builder = ./builder.sh;
   src = fetchurl {
     url = http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_9_linux.tar.gz;
-    /*sha256 = "0y69n2i8b0zrb5dswhsvb6gls30p42p869vvyvpsg3prwwdrf6z3";*/
-	sha256 = "ad2f9eb98e976a82b62e97e7cf3a555464e43b80507b87ed7c469706faa4d897";
+    sha256 = "ad2f9eb98e976a82b62e97e7cf3a555464e43b80507b87ed7c469706faa4d897";
   };
 
   inherit zlib alsaLib;
diff --git a/pkgs/applications/window-managers/ion-3/default.nix b/pkgs/applications/window-managers/ion-3/default.nix
index 282de5ab0c4a..e6714536cadd 100644
--- a/pkgs/applications/window-managers/ion-3/default.nix
+++ b/pkgs/applications/window-managers/ion-3/default.nix
@@ -1,14 +1,14 @@
 { stdenv, fetchurl, x11, lua, gettext, groff }:
 
 stdenv.mkDerivation {
-  name = "ion-3rc-20070608";
+  name = "ion-3rc-20070902";
   meta = {
-	  description = "Ion is a tiling tabbed window manager designed with keyboard users in mind.";
-	  homepage = http://modeemi.fi/~tuomov/ion;
+    description = "Ion is a tiling tabbed window manager designed with keyboard users in mind.";
+    homepage = http://modeemi.fi/~tuomov/ion;
   };
   src = fetchurl {
-    url =  ftp://ftp.chg.ru/pub/Linux/gentoo/distfiles/ion-3rc-20070608.tar.gz;
-    sha256 = "1s46vbm74vjdjmnz8dczk9km8lhwnw63mziwb2ymib63c6gxifhy";
+    url = http://iki.fi/tuomov/dl/ion-3rc-20070902.tar.gz;
+    sha256 = "062a0rgxzz4h1hih5lp7l2nfvhz095brag9fmnanzqc4dac228xl";
   };
   buildInputs = [ x11 lua gettext groff ];
   buildFlags = "LUA_DIR=${lua} X11_PREFIX=/no-such-path PREFIX=\${out}";
diff --git a/pkgs/development/libraries/agg/default.nix b/pkgs/development/libraries/agg/default.nix
index df8cfc5c04d3..2c85f401255c 100644
--- a/pkgs/development/libraries/agg/default.nix
+++ b/pkgs/development/libraries/agg/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "agg-2.5";
   src = fetchurl {
     url = http://www.antigrain.com/agg-2.5.tar.gz;
-    sha256 = "07wii4i824vy9qsvjsgqxppgqmfdxq0xa87i5yk53fijriadq7mb" ;
+    sha256 = "07wii4i824vy9qsvjsgqxppgqmfdxq0xa87i5yk53fijriadq7mb";
   };
   buildInputs = [autoconf automake libtool pkgconfig];
   preConfigure = "sh autogen.sh";
diff --git a/pkgs/development/libraries/libogg/default.nix b/pkgs/development/libraries/libogg/default.nix
index 50351f66391f..fc4c77f9f2a3 100644
--- a/pkgs/development/libraries/libogg/default.nix
+++ b/pkgs/development/libraries/libogg/default.nix
@@ -4,6 +4,6 @@ stdenv.mkDerivation {
   name = "libogg-1.1.3";
   src = fetchurl {
     url = http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz;
-    md5 = "eaf7dc6ebbff30975de7527a80831585" ;
+    md5 = "eaf7dc6ebbff30975de7527a80831585";
   };
 }
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
deleted file mode 100644
index 070cc4071ad3..000000000000
--- a/pkgs/development/tools/build-managers/apache-ant/core-apache-ant-1.6.1.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{stdenv, fetchurl}:
-
-stdenv.mkDerivation {
-  name = "core-apache-ant-1.6.1";
-  realname = "apache-ant-1.6.1";
-
-  builder = ./core-builder.sh;
-  src = fetchurl {
-    url = http://www.apache.org/dist/ant/binaries/apache-ant-1.6.1-bin.tar.bz2;
-    md5 = "703d0265d05b98afd95be0bc21b98420";
-  };
-}
diff --git a/pkgs/os-specific/linux/firmware/ipw2200/default.nix b/pkgs/os-specific/linux/firmware/ipw2200/default.nix
index e10a8b45c311..7852ce2ca808 100644
--- a/pkgs/os-specific/linux/firmware/ipw2200/default.nix
+++ b/pkgs/os-specific/linux/firmware/ipw2200/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
     # "... you may transfer a copy of the Software ... provided such
     # recipient agrees to be fully bound by the terms hereof."
     description = "Firmware for the Intel 2200BG wireless card (requires acceptance of license, see http://ipw2200.sourceforge.net/firmware.php?fid=7";
-    url = http://ipw2200.sourceforge.net/firmware.php;
+    homepage = http://ipw2200.sourceforge.net/firmware.php;
     license = http://ipw2200.sourceforge.net/firmware.php?fid=7;
     # See also http://ipw2100.sourceforge.net/firmware_faq.php
   };
diff --git a/pkgs/servers/ftp/vsftpd/default.nix b/pkgs/servers/ftp/vsftpd/default.nix
index a6a5afcfd6fc..861845ab24f4 100644
--- a/pkgs/servers/ftp/vsftpd/default.nix
+++ b/pkgs/servers/ftp/vsftpd/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "vsftpd-2.0.3";
   src = fetchurl {
     url = ftp://vsftpd.beasts.org/users/cevans/vsftpd-2.0.3.tar.gz;
-    md5 = "74936cbd8e8251deb1cd99c5fb18b6f8" ;
+    md5 = "74936cbd8e8251deb1cd99c5fb18b6f8";
   };
   
   NIX_LDFLAGS = [ "-lcrypt" "-lssl" "-lcrypto" ];
diff --git a/pkgs/servers/mail/dovecot/default.nix b/pkgs/servers/mail/dovecot/default.nix
index 1c58819ab167..e93926b2f378 100644
--- a/pkgs/servers/mail/dovecot/default.nix
+++ b/pkgs/servers/mail/dovecot/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "dovecot-1.0.3";
   src = fetchurl {
     url = http://dovecot.org/releases/1.0/dovecot-1.0.3.tar.gz;
-    sha256 = "14b3sbvj9xpm5mjwfavwrcwmzfdgian51ncspl8j83cd8j01jdjz" ;
+    sha256 = "14b3sbvj9xpm5mjwfavwrcwmzfdgian51ncspl8j83cd8j01jdjz";
   };
   
 }
diff --git a/pkgs/servers/samba/default.nix b/pkgs/servers/samba/default.nix
index e91af3fbc248..3ce8784a9a5a 100644
--- a/pkgs/servers/samba/default.nix
+++ b/pkgs/servers/samba/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   builder = ./builder.sh;
 
   src = fetchurl {
-    url = http://us1.samba.org/samba/ftp/stable/samba-3.0.25b.tar.gz;		#TODO, change this to a URL of cs.uu.nl/...
+    url = http://us1.samba.org/samba/ftp/stable/samba-3.0.25b.tar.gz;
     sha256 = "18l71skn7mryg78jpd8x38pf27wvrx00v33w3z2ycsfnrbcp8l6w";
   };