I have a unibody 2008 MacBook pro, and since shortly after I got it it will just turn off when I'm playing a game. This happens on both the osx side and windows xp side. At first I thought it was overheating, but it kept happening after I bought a cooling mat, and it also happens randomly, it could be a few seconds after starting, or hours later. It seems to happen a LOT more often when using the dedicated graphics card, and rarely when using the integrated one. Recently however it's started doing it a lot more often, even with the integrated card. It makes it virtually impossible to play games on it, and like I said it happens on osx and windows xp. Has anyone else had these issues? Anyone have any advice?