On Tue, 16 Apr 2013 00:21:33 +0000, Rock wrote: > Is there a Desktop crash log somewhere? Given that the advice was that X was crashing due to Nvidia driver mismatch problems after my "yum update", I took a look at the ~/.xsession-errors log file before and after the crash. And, you seem to be correct: The xsession is crashing when using Firefox (but not Chrome): Window manager warning: Fatal IO error 11 (Resource temporarily unavailable) on display ':0'. nautilus: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. polkit-gnome-authentication-agent-1: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. nm-applet: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. rhythmbox: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. gpk-update-icon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. pan: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. gnome-screensaver: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. gdu-notification-daemon: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. gnome-terminal: Fatal IO error 104 (Connection reset by peer) on X server :0.0. [14555:14555:0415/175602:ERROR:chrome_browser_main_x11.cc(62)] X IO error received (X server probably went away)