I have a Mac Pro 2.6ghz
geforce 7300 cards x 2
2gb ram.
Catalyst 4.05 DV

I was having problems when running the same graphic on both outputs.
The 2nd output was up to 2sec behind output 1.
My immediate reaction was the Graphic Card.
With Richards assistance and some patience it was discovered that:

The digital Juice content that I had bought was sorensen codec and 60fps
Most of my other "collected" content was 25 or 30 fps and photo jpg.
I am still trying different combinations and will let folks know how its going.

My content is a real mish mash of codecs and fps after being handed down by many a rocket scientist.

Thank god for compressor.
Many Thanks Richard for your patience.
Stay Tuned.