Whilst testing and update from 5.3 to 5.4 I updated gdm to gdm-1:2.16.0-56.el5.x86_64.rpm Restarting gdm before seeing the login screen a box appears with the message: There was an error loading the theme RHEL Cannot open file /usr/share/gdm/themes/RHEL/RHEL.xml # rpmqv -f /usr/share/gdm/themes/RHEL/* redhat-logos-4.9.16-1.SL.6.noarch.rpm ... It seems that /usr/share/gdm/defaults.conf has changed the default theme # diff /usr/share/gdm/defaults.conf* 459c459 < GraphicalTheme=RHEL --- > GraphicalTheme=EaseOfBlue Reversing this change fixes the problem. -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge [log in to unmask] http://www.dpmms.cam.ac.uk/~werdna