I have reinstalled Fedora 9 (not an upgrade) onto a system that used to run F7 fine (except for a new video card, see below). Now I am seeing intermittent system hangs or lockups; probably about 2 or 3 per day. This happens most often if I'm scrolling a page in Firefox with the mouse wheel, but it has happened a few other times too. Usually when this happens I'm doing very little other than viewing a webpage or typing at the terminal shell. No music or video is playing; screen saver is not running. Usually the only major apps in use when this happens are Firefox, Thunderbird, terminals, and emacs. I have not enabled any of the Gnome desktop effects. When the system hangs, the mouse cursor will continue to move, but it is very jumpy and sluggish. But otherwise the system is completely unresponsive (not just slow). Nothing visible on the screen updates at all, mouse clicks are not registered, keyboard input does nothing. I can not even switch out to a console window, or any of the ctrl+alt sequences. The only thing I can do is to do a hard power-off and reboot. When the system comes back up I can not find any information about what may have happened. Log files just go silent at the instant the hang occurs. All F9 updates are applied. Running kernel 2.6.25.6-55.fc9.i686. No custom drivers or packages, and very little customization...mainly out-of-the-box Fedora. This system is a Dell Optiplex GX270 (4-5 yrs old) with a Pentium 4 3GHz cpu with hyperthreading enabled, 1 MB ram. I am using LVM and LUKS encryption on the swap and /home. The only hardware change in the system was replacing my old PCI graphics card (Matrox Millenium II) with a brand new ATI Stealth X1050 AGP. This was necessary because the F9 graphical install was unusable; as the old card only had VGA output and the installer's X11 could not properly auto-detect the LCD widescreen monitor and was trying to drive it at too high a frequency. I needed to have DVI output for the F9 graphical install to work; so I had to get a new video card. Does anybody have any ideas what might be happening; and is there anything I can do to help diagnose this problem or obtain more information that may be useful? -- Deron Meranda -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list