im on my 3rd macbook in one month due to something whining (cpu maybe???) but i got my 2nd one exchanged today for this one. this one is making the same noise which is not good. when i was at the genius bar the manager told me i could not exchange this one that i was stuck with it or get a refund regardless of how bad this one whined. they blamed it on software which is the worst excuse ive ever heard. so either im stuck with a macbook that whines that i cant even sleep with it on or no macbook at all. why cant they just put out a firmware upgrade or something to fix it.