Firewire ports conflict with sound settings

[sammyblanks]

Hi,

Peculiar problem. My sound suddenly switched to being internal speaker only, even though I have decklink HD Extreme card and was using it as my audio output the night before. Narrowed the problem down to anything being plugged in to the firewire ports - FW400 and FW800 ports and drives or even my Mini DV deck. When I plug anything into the firewire ports, trying to get to the sound settings in system preferences hangs, and all sound will only work on the internal speaker. This is a sudden problem and leaves me only being able to plug in esata external hard drives. There is some sort of conflict going on somewhere. Can anybody help?

Sam

Mac Pro Mac OS X (10.5.8) MAC OSX 10.5.8 2x3GHz Quad C Intel Xeon 4GB 667 MHz DDR2 FB-DIMMore