The standard "journalism" rule is that three is trend. So here's one with the new MacBooks: They've got problems! Screwy video cards, insomniatic, power-sucking sleep and not playing well with other RAM.
There appear to be a couple variations of the sleep problem. The more obvious, crazier one is that after going to sleep, the notebook will wake up 30-60 seconds later, then go back to sleep, repeating the cycle until the battery is dead.