Thank-you Luke for your help with my issue. It was the kind of info I was looking for. Unfortunately moving the card to the suggested slots made the Kona SD studder on 8bit playback and lowered the preformance of my Ultra 320 raid, so I moved them back. UL4D in slot 4 (top slot) Kona SD in slot 2. At least this would make the card usable for monitoring in 8bit. I guess I will try rebuilding the computer, perhaps some components on FCP or QT were not installed correctly. Even without the latest OS and FCP upgrades the G4 is still running perfectly. This G5 issue is very confusing. Thanks so much for your time. Of course I do welcome any other advice or suggestions.