So i have the june 2.8ghz mbp with 512mb 9600 running snow leapard. i play cod4 fairly often. Twice I have had it do a weird crash on me. The game freezes, and right as it freezes the speakers emit a harsh screech at full volume, no matter what level the speakers are at. blew out my eardrums when i had earbuds in the first time. brutal. the sound sounds like it is the loudest/highest pitch the speakers can emit. then the game quits. after the game quits i have no sound unless i restart the computer. any ideas what the deal is? my computer does not feel that hot and today it happened with only about 20 minutes of gaming under its belt.