I have a Toshiba satellite laptop in the shop right now with some odd symptoms. It is running very hot (85C) on idle. I have taken it apart, cleaned it (it was already very clean), put on new heatsink paste, reassembled and turned it on. Coretemp and HWmonitor both say it is running ~85C at idle! The fan IS running as I can feel air coming out of the vent, and it is barely warm. The bottom is a little warm, but not horribly hot. I understand how phase change heatsinks work, and I really don't think they can stop functioning since the operation is a simple effect of physics, but does anyone have another idea? Maybe the temp sensor in the CPU is bad? I haven't seen that before either.