Panther Eats FireWire 800 Drives
the_webmaestro writes: "Apple has announced that Panther (Mac OS X 10.3) may cause corruption with external FireWire 800 drives (anything with an Oxford 922 chip). Fortunately for me (unlike the poor souls who've already had problems), I guess I'm glad I ordered a lowly a 250GB Firewire 400/USB2.0 Combo Drive..." maccw reports that Firewire 400 customers are also reporting problems, as detailed from this Wired story.
Just FYI -- the Panther issue just ruins data, not the hardware. It's not clear where the problem is but it seems to affect a lot more chipsets than Apple is acknowledging right now.
According to this Apple page the problem is with the chipset.
OWC has posted a firmware update for their drives, as has Wiebetech. It looks like the Wiebetech requires you to update the firmware in Jaguar, and then they don't recommend using it IN Jaguar afterwards... Sheesh.