Re: Firewire RAID and G4- Known ISSUES?

Tricky one by the sound of it :-)
reading twice through all your posts there is only one thing that comes to mind.
In FCP (4.5 I assume) check the Video out settings under the view menu. Don't have the big one running so out of my head there is a setting for: none/all frames/current frame. the normal setting should be: all frames (command-12).

The strange thing is that you get a picture out the Igniter (Aurora frame) but nothing out from FCP.
Also you could try to repair permissions from within the 'disk utility'. maybe some system extension is not working. OSX often still is a bit of mystery land.

hope this helps
Cofe