I have the same problem with post.kareeza.com as “bedge” did (see http://forum.avast.com/index.php?topic=149876.0#top). Apparently, the problem was solved for him/her, but I don’t know how it was solved and I would like to, since I have it every day, no matter what browser I use. And I’m getting no help from Avast Help.
http://forum.avast.com/index.php?topic=53253.0
Follow the instructions and ATTACH the logs to your next post.