Since I upgraded to Hardy, I've been experiencing frequent total system freezes. At this point only my mute and unmute buttons appears to work and I have to hard boot my computer in order to restart. There appears to be no errors reported in my syslog.
Just so you know, I use a Thinkpad T60 that previously worked perfectly on Gutsy (never had freezes before).
These freezes tend to happen when I don't touch the computer for a while (e.g. when I'm watching a movie fullscreen or when I go away and the screensaver is on). However, they don't occur 100% of the time when I'm away (e.g. two nights ago my computer still was working when I woke, but this morning it was frozen).
Ideas?
Update: Since I switched my screensaver from a blank screen to something active, I no longer get freezes overnight. However, my computer still does periodically freeze when watching a video fullscreen.
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