Wondering, if anyone has experience with this. I have a 13inch macbook late 2008 unibody model. The computer shuts off randomly. I originally thought this was a battery issue, but have since replaced the battery and it still is happening. I took it to the apple store, they thought it might be an issue with the magsafe power adapter, they offered me a replacement free of charge. The issue is still happening. Did some research, and I think it may have something to do with the logic board, but I am not certain. The part is rather expensive and I am out of my service support agreement. Any suggestions.