Avast is continuously popping up with “avast! Web Shield has blocked a harmful webpage or file.” All of the webpages end in task/2000/. I have run scans with both avast and Malwarebytes and removed the infections they found, however the popups are still going, approximately once every 10-15 seconds.
Your PC may be infected, you may want to follow these instructions : http://forum.avast.com/index.php?topic=53253.0
If you submit logs… make a thread in this board : http://forum.avast.com/index.php?board=4.0