I'm having the same problem I was having earlier this month, which seemed to go away after re-installing avast completely. But now I think I have narrowed down the problem.
The outlook resident provider does not appear to work. Even when started, it shows as "greyed out" when looking at the list of providers. It doesn't appear to be active at all. The internet mail shield does work though. Any ideas?
I am running copernic desktop search beta and google desktop search, I don't think they'll be causing problems, as I know other people who use them and don't have avast problems.
Could it be Nokia sync? I also have something called synchronisation companion which syncs with a server on the web.
I'm running avast pro 4.6.623 / windows xp pro and outlook 2003.
Any pointers would be appreciated.
Thanks
Anthony