I have a 1st gen Blackbook Updated the ram to 3g Updated the HD to 500GB Hitachi Travelstar 7K500 7200RPM 2.5" SATA HD 16MB Cache Downloaded and installed the latest adobe flash update. Yet anytime I play a youtube vid or any flash vid for longer than 90 seconds my entire macbook will freeze & Im forced to manually reboot by holding the power button. This happens litterally all the time! this is the problem report: can someone please help...this is driving me nuts!!!