How many of you have had a logic board replaced on your dual USB iBook? Whgy was it replaced? I'm trying to get an approximate read on how widespread this issue is. My iBook died in October at the ripe old age of 3 months. It required a new hard disk and logic board, though I wonder if the logic board replacement was just precatuionary, The Apple hardware test CD didn't indicate any trouble with the logic board. My iBook just couldn't find the hard drive.