It seems that my Ubuntu 10.04 (clean install) to randomly freeze / hang (mouse/keyboard unresponsive, only a hard reboot is available as option) but with no garbled screens/windows/etc. There's no pattern why or any application that could be responsible. It could happen ten minutes after it is started or after 2 days but at some point and suddenly the system will become totally unresponsive, freeze and hang up. I used the same PC with Karmic Koala and releases before that (sometimes on for days) with no such problem so it shouldn't be a hardware problem.
I thoroughly check system logs after the hard reboot (System > Administation > Log File Viewer) and there's no entry around the time of each freeze / hang to pinpoint me to something.
The only thing that is certain is that the following errors / warnings always appear in .xsession-errors file:
Window manager warning: Failed to read saved session file /home/lkrory21/.config/metacity/sessions/1080c45259ed06f712734738133612800000012480026.ms: Failed to open file '/home/lkrory21/.config/metacity/sessions/1080c45259ed06f712734738133612800000012480026.ms': No such file or directory
(polkit-gnome-authentication-agent-1:1321): GLib-GObject-WARNING **: cannot register existing type `_PolkitError'
(polkit-gnome-authentication-agent-1:1321): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
** (update-notifier:1457): DEBUG: Skipping reboot required
4. (If I use Chrome)
(exe:1524): Gdk-WARNING **: XID collision, trouble ahead
5. (If I use Firefox, in this case the file is literally flooded with this warning)
(firefox-bin:1579): Gdk-WARNING **: XID collision, trouble ahead
Here is also some info about my system:
M/B: ASUS P4R800-V DELUXE
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz
Graphics: ATI Radeon 9100 IGP
Any suggestions what else I might check?
Thanx a lot in advance!