[Ti] signs of a bad logic board

[MS]

I just had my Mother board replaced by Applecare, along with the 
DVD-ROM, the Battery, the Keyboard, and top-case.
I was having major trouble with my Ti-book 500 just "freezing" for no 
apparent reason, it didn't matter what software was running or if it 
was just in the finder. I thought the Hard drive was the problem, but 
Apple said it was the Mother board.

sincerely,
ms