My fastest machine, which is an Athlon XP running at 2 GHz, has run out of
work units.  When I try to "update" I get a message saying

"No Work from Project".

I have also noticed a couple of my other machines are also running out of
work, and don't seem to be getting as many WU's as they did a week ago.

This really sucks! I even tried updating the amount of days to cache, but it
didn't make any difference.

Darren