I had the exact same symptoms. I called AppleCare about it, they gave me a case number, and I took it to an AppleCentre to get the logic board replaced. That was several weekends ago, and i havent had a problem since.Buschmaster said:Mine is very strange. One minute it is performing just fine, for maybe several weeks at a time, then it hits a day where it will have 10 random shutdowns and I can't get anything done!
Same thing with mine. When I first turn it on in the morning, it will randomly shut down for several minutes. Holding down the power button will get it to stop rebooting, until the next morning when it all starts again. I'm calling Applecare after the long weekend. If this isn't resolved without having to be without my laptop at work for several days, I'm getting my money back and never purchasing Apple hardware again. Having to "send it in" to Apple and not having my work computer for several days is completely unacceptable.Buschmaster said:I did the high pitch beep thing and it helps for a little while... but only so long.