Thanks.
Since we're not sure how this drive developed some unreadable sectors, and now it seems fine after a fdisk and format, I think we'll just pick up one of the 120GB Seagates for $50 at BBuy (need local and quick) and use this Samsung as a backup.
I'm pretty sure the drive is over 4 years old anyway. The system has a Barton 2500+ @ 3200+ in it and was using a Radeon 9500 graphics card. That seems about three years old...
C