I have been playing plants vs zombies on my new 2011 mbp. I have the screen on full brightness and have been playing in full screen. I got a total of 1.5 hours of play time before the battery needed to be charged. Is playing a game putting that much load on the computer that I would get no where near the 7 hours that is advertised? Does the fact that the fans have been on at 6000 rpm and the computer being at 80C have anything to do with that? Any help would be appreciated. Thank you