What is Avast doing on my network (high traffic)?

Seeing loads of in/out traffic from Avast. What could be causing it?

Edit: Those IP addresses appear to be associated with my Usenet Service Provider’s (usenetserver.com) servers. Why is avast concerned with this? It’s slowing my Usenet downloads significantly.

http://i.imgur.com/55LM5pX.png?1

Disable nntp (news) scanning in the MailShield, if you don’t want it to be scanned while downloading.

Lukas

That did it, thnaks.