I have a client that is running Outlook 2003 on XP pro sp2 with all updates
done. He originally complained about duplicate emails and being unable to
download any new email. He is connecting to a POP3 server.

After checking that the 'leave copy of message on server' was not checked, I
searched for possible issues. I found several posts that mentioned delete
the user profile and recreate it. This works for about a day, and then the
problem re-occurs.

I have gone so far as to use regedit to delete the user profiles in the
registry, and create a new one then.

The profile still gets corrupted.

Any ideas on what I can do to fix this?
Thanks,
Duncan