This is a problem Ive recently noticed, particularly on the Windows 7 partition of my 2008 Macbook Pro unibody. I'm running Snow Leopard on the Mac partition. So, to get to the point: my computer is overheating to the point that it shuts down, and is almost untouchable. As you can probably guess, it happens while playing a game (Starcraft 2). It's only happened when playing on a soft surface (in bed, on a pillow, etc.). The simple answer would be to simply not use it on these surfaces, but it seems illogical that you WOULDN'T be able to use a laptop. . . . on your lap. Has anyone had this problem? What solution did you find?