Firewire Bus/Unknown Device?

Hello to all. I just picked up a New 2.3GHz Power Mac and when I was checking the System Profiler in the Firewire section it reads Firewire Bus
Unknown Device
FireWire Bus:
Maximum Speed: Up to 800 Mb/sec
Unknown Device:
Manufacturer: Unknown
Model: Unknown Device
Maximum Speed: Up to 400 Mb/sec
Connection Speed: Up to 400 Mb/sec
The funny thing is I have nothing plugged into any of the Firewire Ports! The other strange thing is I have a 20 inch Cinema Display (which has a USB and Firewire Hub built into the back of the display) and If I plug that Firewire plug into the Computer I get a Duplicate reading of the info above (looks like this):
FireWire Bus:
Maximum Speed: Up to 800 Mb/sec
Unknown Device:
Manufacturer: Unknown
Model: Unknown Device
Maximum Speed: Up to 400 Mb/sec
Connection Speed: Up to 400 Mb/sec
Unknown Device:
Manufacturer: Unknown
Model: Unknown Device
Maximum Speed: Up to 400 Mb/sec
Connection Speed: Up to 400 Mb/sec
I called Apple and They had me run every test under the sun. As a last resort They had me erase the Drive and do a reinstall of just the basic Apple Software and this is what I ended up with. I thought maybe one of you kind folks might have some idea of what the **** is going on.
Thanks
Michael
Dual-Core 2.3GHz PowerPC G5 Mac OS X (10.4.6) 2.5 GB DDR2 SDRAM

Thanks so much for your replies. So what is the technical explaination for this because I have been on the phone with Apple for hours over the last 2 days send them all sorts of system data. I even mentioned the fact that I have seen postings listed on this forum with other people with the same Unkown Error issue happening to there Dual Core machines and the people I have spoken with at Apple are acting like the have never heard of this before. I only noticed this Unknown Device thing because I am in the Audio Recording business and I am having a problem with my Digidesign DIGI002 interface giving me this slight distortion problem coming out of the 002 unit. But this was happening when I had the 002 connected to my Powerbook 17inch 1.33. I figured it was some type of software issue but now I'm checking into the 002 as the culprit! And the people down at Digidesign have never heard about this Unknown Device Issue as well and think that could be messing up the 002 but I do not have this Unknown Device thing going on with my Powerbook. So I'm stumped!
Thanks again!
Michael
Dual-Core 2.3GHz PowerPC G5 Mac OS X (10.4.6) 2.5 GB DDR2 SDRAM

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Firewire Bus/Unknown Device?

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