I'm using Ubuntu 12.04

My hash rate with cgminer is 400 kH/s (litecoin) with a 6950

I was never able to get cgminer to find the ADK and, as a result, can't see fan and temperature info from within the program. I can see it by querying the ati driver directly, though, so I have been able to keep track of everything.

For a while my card was running up at 99 degrees (yikes!). I jammed a new fan in front of it and took the side of the case off. Now it's running around 80.