According to Techworld, the Seagate SATA hard drives used in the MacBook, MacBook Pro and Mac mini may be subject to a flaw that can cause massive data loss.
“The read/write heads are detaching from the arm and plowing deep gouges into the magnetic platter,” Retrodata Managing Director Duncan Clarke explained. “The damage is mostly on the inner tracks, but some scratches are on the outer track — Track 0 — and once that happens, the drive is normally beyond repair.”
The problem is with the Seagate 2.5-in drives with model numbers ST96812AS and ST98823AS. To check and see if your system is one of the ones that could be affected, go to your System Profile, look under Serial ATA, and check to see if your firmware version is 7.0.1 – if it is, you may have a problem.
I would suggest calling Apple and getting their take on the situation. For Leopard Users, I would certainly turn Time Machine on.
via Computer World