It would be nice to know if disabling some modules in avast! would help. For example
- stopping resident providers
- stopping self-defence in Troubleshooting options
I got only "Standart scanner" provider (not sure how named in english version). If I won't be able to use resident defence - it's no sense to use antivirus at all

And yes, I've tried to stop self-defence, antirootkit and so on - there were no changes.
Which OS do you have?
Do you have any other security programs (antivirus, firewall, antispyware)?
Have you tried to download and install the new Nokia PC Suite (6.85)?
you can download it here:http://europe.nokia.com/pcsuite
Win XP SP2. Yes, Outpost Firewall 4 only as firewall (there were no any conflicts with it, anyway - I use avast only as antivirus). No, now I can't dowload new NPS version because of some reasons.. There weren't any problems with earlier versions of avast and I'm sad getting some of them now...