Many WUs on GTX 460 taking a long time

I just installed my new Fermi card during the time that everything was coming back online last week, hoping to start crunching like mad. But when I finally downloaded some work, most of it is taking way too long, up to two hours per WU. I'm just running one at a time on the card for now, and I'm using optimized apps and Fred's priority tool to make the CUDA tasks get high CPU priority. Here's a sample problem unit:

http://setiathome.berkeley.edu/result.php?resultid=1807201000

It's not VLAR (obviously), so what is going wrong? In fact it's a pretty high AR, right?

Do you use (any) screensaver?
Do you often play 3D games?
Open programs (e.g. browser)?

Did you Reboot recently?

Exit BOINC and check the GPU load (by GPU-Z)(if another program is using the GPU).
Also check which process uses the most CPU.
Try running without the Fred's priority tool.
Check the speed (MHz) of GPU/shaders/video RAM during the GPU computation.


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- ALF - "Find out what you don't do well ..... then don't do it!" :)

I don't run games at all and usually don't have any other programs (browser etc) open. I was letting the boinc screensaver run (with no SETI graphics, obviously, just stats showing) and I tried disabling that. This looks like it helped. All WUs since that change have taken a reasonable amount of time. Hopefully it holds up and that really was the problem. Not sure why that non-intensive screensaver would have messed with the GPU, but that may have been it.