After all of this time testing out F11, I had originally thought there was something wrong with FireFox/Thunderbird, or simply xorg. It was causing my system to completely hang and a hard reboot was required. There is no system logs ever reported, just a gap of dead-time when the system hung to when it was booted. I seemed to have finally narrowed it down and have not experienced daily complete systems hangs after disabling the Gnome ScreenSaver. I tried GSS with a blank screen and everything else I could think of and it does not prevent the hanging problem. But if I completely disable the GSS, i.e. uncheck both: (1) "Activate screensaver when computer is idle" (2) "Lock screen when screensaver is active" My system has been running F11 for a week now, and it has not hung at all. Unfortunately, my computer is without security, short of logging out. Has anyone else experienced this problem? My system is a ASUS P5GC-MX/1333 if that helps. FWIW, Dan -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines