Yes, i have just finished testing and it would appear that there is an issue with these devices on 10.6

The error we are seeing is only effecting the third output and testing was done at 3x1024 x 768 @ 50hz and 60Hz. It manifests itself with the second half of the output displaying a digital white noise. This was on a generation two Mac Pro with an X1900, i haven't had a chance yet to test this on a Gen3 machine with a 4870 but will report back once i have.

The system was setup as a 10.5/10.6 dual boot, upon rebooting the machine into 10.5 all issues where resolved and the THTG performed as expected.

Cheers

Gareth