I’m hoping after the release of a new firmware update today from Apple, my MacBook random shutdown problems will be over. It was already pretty stable, but did have some issues awakening from safe sleep (which I’d really rather it didn’t go into). Others are reporting exactly the same situation: stable while awake, but trouble waking up. It seems that this has really done the trick (knock on wood).
I was desperately not looking forward to loosing my computer for another month.