Because their drives were crap, and they are dead, dead, dead (good riddance) "Never buy a drive from a vendor starting with 'M'" Seagate and Quantum have honorary M's in their names, too. I just made the mistake of buying three 300 gig Seagates. One was DOA, the others are very picky about operating temperature ( I have to run them in open air with the logic board facing up). They also will only run on firewire bridge boards in with a G4 powermac (they hang the system on any of the internal PATA busses). Hitachi 400's worked perfectly (I have 4 running in this machine right now). No doubt one of them will crap out now that I've posted this. The only recent IBM/Hitachi drives I know of that were dogs were 120's made in Hungary (the ones from Thailand are fine).