"FireWire Unknown device" - but nothing is connected!

Hi everyone,
although I have no FireWire devices connected, System Profiler keeps showing an "Unknown device - maximum speed 400 Mb/sec".
Seems like the FW bus retains the memory of something that was connected at some time, but I cannot reset it. I ran through the suggested "unplug everything, shut down and wait 30 minutes" method, with no positive results.
Problem is, my Avid Mojo will not run if it thinks there is anything else connected to the FW bus.
Anyone have any ideas on how to reset the FireWire bus?
Thnks a million!

Hi Roberto Servera-
Did you look with everything except mouse unplugged?
Have you tried removing any PCI cards if present?
Luck-
-DadyPaycheck

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"FireWire Unknown device" - but nothing is connected!

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