Anyone else have this happening? I took my comp to the apple store and they said it was the heatsink and replaced that. Then I got the firmware update and it's still happening. Probably like once or twice a day. What the heck is up with this?
I had the problem with my MacBook (purchased in June '06, problem started in October). I took it to the Apple Store and they replaced the heat sink-- no problems since then (fingers crossed).
The firmware fix came out about a week after I got the computer back. Of course, I applied it.
I'm with Pulse-8: get the machine back to the Apple Store ASAP.
There are lots of sites dedicated to this problem: just Google "MacBook Random Shutdown" and take your pick.
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