my pc spec sare:
asus p4c800-e deluxe mobo
radeon 9500 pro
win xp pro corp
what was happening was i would let bittorrent download, and when the comp would set for a while, it wouldnt wake up, and repeated attempt at shaking the mouse would lock the puter up solid. i dont have hibernate on, and my hard disks are never turned off.
i dont know if any of you have had this issue. i just thought i would share my experience.