FireWire Bus Out?

My FireWire ports became unresponsive suddenly yesterday. All of them - both FW400 and FW800. I'm trying to trouble shoot this myself before taking the machine into the Genius Bar (I think the AppleCare has expired).

When I go to the System Profiler and click on the FireWire tab I get this message: Warning: Unable to list FireWire devices (in red text)

Has anyone else experienced this? Is the FW Bus fried?

Here are links to images of the error and my system info.

http://i562.photobucket.com/albums/ss64/kdengs/Screenshot2013-05-03at104525AM_zp s50a57113.png

http://i562.photobucket.com/albums/ss64/kdengs/Screenshot2013-05-03at110806AM_zp s7783f9b0.png

Thanks for any help!