My Vista Sidebar has a gadget called CPU Usage, that shows 100% anytime there is a document in the printer cache.
However, if I open Vista Task Manager at the same time, nothing shows more than 20% on the CPU Processes tab, but the Performance Chart is at 100%
McAfee Virus Protection status says protection is enabled and it is up to date, Last scan was today, subscription expires March 2010
Sorry it took so long to get back with you, but something came up and I couldn't try this until today.
I followed the steps referenced, and the problem appears to be with the Spool SV.exe, PID: 1472; Services: Spooler (i.e., Print Spooler). I disabled the Spooler Service, and the CPU usage dropped immediately. So I think this is the problem, however...
My printer still does not print without the spooler. I will try to uninstall the printer (again) and try to reinstall it (again).
If that does not work (again), I would suspect a printer (hardware) problem. What do you think?