MK42 check this out.. it helped feed the confusion:
is That 1394 Net Adapter built in .. a Firewire connection? .. if so, why does it say "connected"?
Hah, I can see that being confusing. I think it must be firewire, but I have no idea why it would think it was connected. On PCs I've had in the past with firewire ports, I disabled them. I got similarly confusing messages, and they just got in the way.