Running gdmsetup and changing the option to autologin and then back to nomal cretes the missong file. I found this workaround from http://ubuntuforums.org/showpost.php?p=8372676&postcount=7
** Tags added: i386 karmic -- Unable to load file '/etc/gdm/custom.conf' https://bugs.launchpad.net/bugs/500377 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs