I aborted this WU after several days of getting stuck (I didn't notice it earlier) The last 12 hrs I had it running in realtime mode, just to make sure it was getting enough cycles.

http://www.ps3grid.net/workunit.php?wuid=56641

it racked up over 3h of CPU time, and it was indeed running the entire time (could tell by the unsmoothness of the UI, and the CPU usages was always 2-3%). So it seemed to have found an infinite loop that it never broke from.

I had another WU I had to abort - 17h CPU time (with 9-10H running in realtime) and it was still only 18.023% complete. It was, however, taking up 20% of the CPU when running in realtime, but as it was running mush longer than it should with no progress, I aborted it. I did upgrade BOINC in the middle of the WU, but I had noticed it was stuck even before th upgrade. It was 18.023% complete before I switched to realtime.

GeForce 8800 GTS 512, server 2008 x64, BOINC 6.3.14 upgraded to 6.3.17.

Just found this WU

http://www.gpugrid.net/result.php?resultid=97018

with a CPU-time of 39,635.10 seconds on my GTX280. The card was running on 80°C (never seen before such high temperature) and shows 48% complete. I canceled this WU.
____________