I have a WU that will not seem to end. 65 hours so far, and only at 40%. This is on a Vista32 box running 6.10.18. Is there any particular reason this is happening?

I have the same problem on a couple of my hosts
- mostly on my T8100 c2d running vista 64 and bm 6.10.17 (64bit)
- the other is a Q6600 c2q running vista 64 and bm 6.6.20 (64bit)
- only way out is to abort the wu once I notice they are way over the 12 hours

two of the latest units are
http://wuprop.boinc-af.org/result.php?resultid=782826
http://wuprop.boinc-af.org/result.php?resultid=811095

any ideas on what is causing these wu's to stop progressing at
a given (random) point in their processing??

wu 782826 wasted 5 wu's worth of processing before I noticed it!

Any chance we could get some feedback on this? I've aborted two WUs recently (Task IDs 999204 and 981688) that got hung up on the same host, a Q6600 running WinVista32.
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WU http://wuprop.boinc-af.org/result.php?resultid=1036186 on computer http://wuprop.boinc-af.org/show_host_detail.php?hostid=6945 is doing the same thing. It is up to 56 hours and is 53.1% done. Unlike the rest of the people in this thread I am running Ubuntu with a Linux 2.6.32-25-generic-pae kernel on an i7 920 based machine with 3G of ram.

I will abort it as it has taken way to long and I would like to get some credit from this machine.