Try googling for "IBM Deathstar" (that is
NOT a typo). The Deskstars are
notorious for poor reliability.
Out of my 7 30GB and 60GB Deskstars, two died within 2 years. Luckily (?)
IBM stands by its warranty and you only need go to their website and do an
RMA to get replacements. Of course you have to send in the old one(s), so
back up a.s.a.p.!