OK, I'm just about to book a Genius Bar appointment so hopefully something will be fixed soon...but here is my problem. I've got a mid 2010 MacBook Pro 2.4GHz Intel Core 2 Duo with 4GB ram and the NVIDIA GeForce 320M. I installed Lion on launch, and haven't had any problems until Friday night. At that time I was playing a game whilst surfing the net, never having any problem before I thought this would be OK. My MacBook crashed, and I thought nothing of it, perhaps it was the way I was sitting blocking the fans or something of the sort. This whole weekend has been nothing but crash upon crash upon crash. I'm surprised I've managed to get this far through a post. Any ideas what could be the problem? I work from home so this is a major issue for me. I've read a few threads about other GPUs but no one mentions the card I have, so I don't know if that's relevant. I'm assuming it must be something to do with overheating, but it seems to be crashing even when I'm doing simple tasks now. It would be great if you could give me some pointers before I take it in. It crashes whilst doing tasks, but also on startup (at a screen where it states my MacBook stopped working due to an error)... Thanks for any help!