when boinc preempted another project to start work on the cpdn wu it immediately came up with this error message
<img src="http://bendyben.is-a-geek.com:8080/cpdnerror.jpg">

boinc continued to claim that the unit was running, but my cpu was idle, so i reset the project and it started crunching for seti again, and downloaded another cpdn wu, it has yet to start work on this new unit, we shall see how it goes.
my machine is running boinc 4.05 on windows 2000 sp4