Is there a way to figure out what causes a system freeze? I've never had this happen before I reinstalled openSUSE on my desktop. I usually leave it running at all times, but since the new install, after a few days of being idle and the screen saver running it will just be frozen. Mouse movement does nothing, keystrokes do nothing, I can't ctrl+alt+backspace. The screensaver is GL Matrix & I'm running compiz-fusion. Is there a log that I can post & someone can help me decipher what the problem may be? Thanks In advance for your help!

PS. My desktop in oS 11, KDE3.5.9, kernel i686, P4 2.8 GHz, 1 GB Ram, ATI Radeon RV280 5961