I would really appreciate any advice on this. I have zapped PRAM, repaired disk on MAC HD (from startup disk), and erased and re-installed OS X.5 and still crashing. I brought it in and all the hardware checked out. I feel the Genius's at the Genius Bar half-assed it. I want to say my logic board is failing because, when I go to retrieve any files from my Back Up (time machine external HD) it crashes, when I go to load FCP software (from disk) it crashes. I even do a simple task as import an MP3 into iTunes and I get the pinwheel for 20-30 minutes before registering. I even just got one while typing this post. Is there any other solutions here?