hi there, i'm writing on behalf of a friend of mine who got a new 12" pb 1ghz last week - today when he started the thing he got an error message before booting saying something about "memory access". then, after strating up again, the problem had vanished, but panther started giving him the dimmed screen with the "your computer has to be restarted" message. this now happens totally by accident max 5 minutes after startup. i told him to harrass apple for that, but in addition i thought that one of you guys might have a clue what causes this problem. thanks!