I've had some tasks running recently where the Elapsed Time has been 12 hours or more, and there is very little progress (5-10%). When I look at GPU usage, it is hovering around 5% or less, where I usually get in the 65-70% range. I aborted the tasks as they would have timed out anyway.

Here are the work units/tasks and results:

http://www.gpugrid.net/workunit.php?wuid=1158139
http://www.gpugrid.net/result.php?resultid=1841789

http://www.gpugrid.net/workunit.php?wuid=1156133
http://www.gpugrid.net/result.php?resultid=1838766

The card is an EVGA GTX 260 (216 cores), and it's running Windows 7.

The card has run almost 50 tasks, and has had very few errors. Any idea what causes this?

I just updated to 196.34 to try to fix this problem. It seems to be running fine now, but I will keep an eye on it.

I also run Rosetta and Docking on the CPU, but nothing else on the GPU.

Had another one do it. It's not every work unit - very strange:

http://www.gpugrid.net/result.php?resultid=1849872
http://www.gpugrid.net/workunit.php?wuid=1163524

Oh, and that one went something like 16 hours and was only 9% done or so.