Have recently bought a 12" Powerbook that is constantly crashing with kernel panicks. I recently put in an extra 512mb ram - total is now 768. Kernel panicks started happening before this went in... Prior to sending it back to apple I started backing up some files and the machine just turned itself off. When I turned it back on the date had reset to April 1976 and I had lost some icons in the dock. What the **** is up with this thing!?!?!?