My MBP has been freezing over the past few weeks. When the computer freezes, the mouse gets hypersensitive, then it will be unresponsive to everything. The screen then goes black. One of three things then happen. One, I manually shut the computer down by holding the power button. Two, same as one except I get a Kernel Panic text file on my desktop when it loads back up (this only has happened once), or three, the computer restarts itself. It once from while I was playing Call of Duty 4, and once right after I had quit it. However, I had SMC fan set high whenever I play it, my computer is on a cooling stand and there's an desktop fan right next to it blowing over and under it. Could overheating still be a problem? My MBP is late 2008 refurb, 2.53ghz, 9600 w/ 512 vram, 5400 rmp hard drive, 4gb Apple ram. Freezing has happened under both 9600 and 9400 cards. The 9600 and hard drive have both been replaced by Apple in the past few months due to other freezing issues (the 9600 was defective, but when it froze I would get screen artifacts and the mouse would still move– neither of those things happen now). What do you thing is the problem?