Hello,
I try it too with the 71.89, and i have and important thing for you when i installed the 71.89 on my first windows boot i was able to manually overclock the 6800 ultra and the frequencies doesn't change in 3dmark05 !!!!
i'm sure because of the frames were much higher by 34 direct on the first test and i abroted with escape a few times and rivatuner monitiring save the same frequencies , i put 513/1180 and on the second test of 3D mark the computer reboot, i always has this problems when frequencies to high from autooverclock or bios flash and then when i try 3Dmark frequencies goes to 450/1064.
What does the frequencies keeping the overclock on my first boot??
I hope i help you with this information.
Sorry for mybad english
John