[azim]

My Fall 2009 model overheats and locks up and crashes when playing games like Starcraft 2 or Left 4 Dead 2. That's not to say every notebook from 2009 had cooling problems, but some certainly do.

[watmough]

Why don't you return it? This would be an intolerable problem for me.

I don't expect to see any kind of lockups or grey-screen, ever. It just shouldn't be part of owning any computer, especially a mac.