ok. i just got an xbox 360 about 3-4 days ago. i also bought call of duty: world at war. me and my friends were playing it for kinda long amounts at a time (6-7 hours?) and it was set on a carpet, and not a flat surface or anything. also, this was probably a mistake but, while the disc was in the xbox and it was turned on, i picked up the xbox and was starting to put it verticallly, when it started making a really weird noise so i just put it back. so now, when i play the game, on certain missions, when the other soldiers are talking, they say a few words and then their sentences just get cut off. this has nothing to do with xbox live, i dont even have that set up yet. do you think this has something to do with my xbox possibly overheating, or maybe the disc got scratched? what should i do?