diff -urN gdm-2.20.0/configure.ac gdm-2.20.0.new/configure.ac
--- gdm-2.20.0/configure.ac	2007-09-17 16:46:22.000000000 +0200
+++ gdm-2.20.0.new/configure.ac	2007-09-21 17:29:32.000000000 +0200
@@ -1201,10 +1201,9 @@
 else
    # what to do, what to do, this is wrong, but this just sets the
    # defaults, perhaps this user is cross compiling or some such
-   X_PATH="/usr/bin/X11:/usr/X11R6/bin:/opt/X11R6/bin"
-   X_SERVER_PATH="/usr/X11R6/bin"
-   X_SERVER="/usr/X11R6/bin/X"
-   GDM_USER_PATH="$GDM_USER_PATH:/usr/bin/X11:/usr/X11R6/bin:/usr/local/bin:/opt/X11R6/bin"
+   X_PATH="/usr/bin"
+   X_SERVER_PATH="/usr/bin"
+   X_SERVER="/usr/bin/Xorg"
    X_CONFIG_OPTIONS="-audit 0"
 fi