No problems here! (Avast pro and WinXP pro with several email clients like Outlook, OE, Eudora, Pegasus)
Updated yesterday (18.9) manually and this morning got 24 pieces of this new Swen worm through email (Avast website calls it Swan ?). Avast removed every one of them! (Well 50 more during the day.)
Well I do not need any fancy new features, just make a simple and solid program that works!
This test in real life today told me that I did not waste my money!