On Fri, 25 Mar 2005 19:52:31 -0000, "BrianW" <brian@nospam.net> wrote:

I had to reset the PC (not a clean restart) because I couldn't interrupt the 
screen saver (see another post). Perhaps that is what caused it.

Brian

The screen saver is a known issue that has been pinned to down to a
few instances. If you have one of these situations then you should not
use it:
http://boinc.berkeley.edu/download.php and look under known issues.