Gary
Thank you for the heads up on that note. Apparently there are others that are still sorting things out with both the newest Mac Pro systems and 10.5.2.
As Jean-Philippe Mariani pointed out in this posting,
http://forums.creativecow.net/readpost/98/869152 AJA is recommending that the ATTO-EAS-R380 be place in a 4x slot.
ATTO has confirmed that there are some known issue with the early 2008 MacPro and the R380 card and they are working on it.
I am confident that AJA and ATTO will get it done.
Fred
The Troupe - Modern Media Design & Production