Quick rundown of the problem I've been experiencing:
Computer in question:
'Quicksilver' (2001) 867mhz G4
Serial ATA via MacSense ATA133/SATA card.
Card has been working fine, have been running 10.4.8 from a 250GB Seagate drive. I picked up a 500GB Maxtor SATA/300 drive this evening, but...