Folks, I have an intermittent (but frequent) problem with FC6. At first I thought it was a hardware problem, but now I don't think it is. This is a dual boot system. Windows XP does not crash at all, but FC6 crashes frequently. uname -a output: Linux Linux 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:39:22 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux Other facts: - Memtest completes multiple passes without detecting any problems - Both FC6 and WinXP are on the same hard disk (and since WinXP works fine I don't think it's a disk or disk controller problem.) - Same logic as above for the power supply. - Logging in text mode causes no problems; logging in with either GNOME or KDE crashes the system 99% of the time after a short period of time. - The other 1% of the time FC6 seems stable for at least several hours. In fact earlier this week it was up for 3 or 4 days with relatively heavy usage with no problems. - Periodically, in GNOME, straight but zig-zagged brown lines appear on the display. - As root, I can bring up the KDE environment but not the GNOME environment. As other users I can bring up both GNOME and KDE. - The crashes happen most frequently when I'm using Evolution, but since I use that more than anything else this may not be very indicative. - When crashes occur the display freezes but the mouse moves freely. - When crashes occur the only thing I can do is physically power off the machine. When I turn it back on it boots quickly with only this indication of errors: "usb 1-3: cannot allocate device 2 error -110" or something close to that. - I don't know too much about Linux, but I see no error messages from dmesg or in /var/log/messages - Thinking that this has something to do with X11, I have deleted the xorg.conf file and rebuilt it with system-config-display (several times.) So I'm at a loss at resolving this problem. Any suggestions? Thanks . . . Bob St. John