My XP-Home-SP3 system recently developed the habit of giving an error
pane during Start Up. I click to close it but I'd like to avoid it. I
don't think I did anything to cause it, and suspect that some 'automatic
update' may have caused it. Here it is:

http://bellsouthpwp.net/b/i/billurie/accdenyerror.jpg

Any clues?