As some of you may have read, I repaired my PowerMac G4 MDD about a month ago. At the same time I fixed a friend's FW800 because it was freezing. Mine must have caught the same bug off of the other, because now it spontaneously freezes!! I used the hints from last time and track the temp, it now sores up to 50º+ after only minutes of YouTube or Quicktime, then locks up suddenly. Nothing else, no drives spin down, no lights, no flashing, no black screen, it simply ceases to be! Besides that, it has worked fine all this time. I swapped HDD's, installed Tiger again and the problem persists! That solved it for me last time, so this is just odd. Thanks.