I won’t call bug, problem or victims…
In fact, there should be other things to analyse. For instance, which is your email program, which size of attached files are trying to send…?
Maybe the timeouts could solve.
Here you can see more about timeouts into Internet Mail provider and your email account: http://forum.avast.com/index.php?topic=11380.msg96646#msg96646
What I want to tell is that this feature seems to be working to me and, maybe, it won’t have to be ‘solved’ in the next version…