We did not have this problem with Avast Free.
Two days ago we purchased a license for 3 computers for Avast Premier. After installing it on two computers, we started experiencing very frequent and annoying resets of our router. Router lights going off, then reconnect, then a few seconds and it goes off again.
We nailed the issue to receiving email. One computer is Windows XP and uses Outlook Express. The other is Windows 7 and uses Windows Mail. If we keep these programs closed in both computers, the router stays on. As soon as we open any of these and it receives the first or second email, the router resets itself.
Please help, we don't have a clue. We need both the antivirus and emails programs
Thanks.