Hi, I'm getting a similar problem. A very long wait (seems like 5 minutes) displaying any e-mail with web content, or sending an HTML format e-mail.
Also, web pages that will never load.
I initially thought it was an issue with my internet connection, but when I changed connections, still slow.
I terminated, then restarted Web Shield, and the problem was resolved.
Outlook and web is not always slow, but when is, it will remain slow until avast is terminated and restarted (and, it seems just the web shield is the critical component). I'd say that half of the time, when web shield starts, the system is very slow, and half the time, it isn't. That means, that when it is slow, around half the time restarting web sheild fixes the problem.
I'm seeing this with Outlook 2007 SP1 (12.0.6300.5000), IE7 (7.0.6001.18000), running Avast 4.8 (4.8.1169, VPS 080410-1).
I'm seeing this on at least two PCs - running Vista Ultimate (SP1: Build 6001) and XP (SP2)