avast and pegasus 4.1

I’ve got avast 4 and want it to protect the mail-accounts i n pegasus 4.1. The newest update of avast states it supports avast 4.1. It in fact does try to download my mail, but al authentication at the mailserver fails…
Should I downgrade to pegasus 3 (working fine with avast) or try another av-program? >:(

The actually set up configuration you had with P v3 should be the same as with P v4. Recheck your Peguses set up including the outgoing and incoming server ID and user ID.