5 hours is only a supposition. It's the winsmp client. It's hung off and on recently so I reboot (I realize now I should probably just restart the service), don't look at fahmon immediately because it takes a while to catch on to the status but an hour or so later it seems to be on the same wu because it's showing it was d'loaded many hours ago but the progress has backed up significantly from where it was before the hang.