I upgraded to Seti  3.08 and found the workunits were taking
12-15 hours instead of the usual 4-5 (for this machine). I
was sufficiently puzzled by this that I actually
"downgraded" back to 3.07 and found the workunits were STILL
taking 12-15 hours. 

Eventually I dug around in the FAQ and found section
2.1.2.5. I had forgotten that the Seti installation switches
the screensaver to "seti@home" from "none" (in my case).
Since the screensaver was set to come on after 15 minutes
and the monitor was set to turn off after 10 minutes, I
never noticed this change. 

Section 2.1.5 says: 
" If running Windows 95/98/NT, make sure your screen saver
is set up for "Blank Screen". For some reason when screen
saver is set to "SETI@home" with "continuous run" enabled
the client seems to waste time fighting with itself. It can
turn out a work unit in half the time by doing this."

This comes under the "Duh" category, but since it is a
mistake someone could easily make, I am posting it here to
hopefully save someone some trouble. 

DT