my computer has been randomly freezing lately. not sure what the problem is. i've checked out of 'hijackthis log' help, no spyware, virus, or malware. when it's left alone for a couple hours or overnight, 2 or 3 times a week it will freeze up and i'll have to manually restart it. tonight it even froze while i was watching a movie. i have xp pro with sp2, and 2.2ghz 64 x2 if thats of any help. i'm not sure where or how to go about starting to solve this problem, so any help is appreciated.