Trouble updating virus def and program

I am having trouble updating my virus definitions and Avast Program, and I have been trying for the last hour.
My internet connection is fine and my browsers are both working. This is a new experience.
Any help would be appreciated.
I get this message.
I see someone else is having the same problem and posted at the same time.
Sorry for the double post.

See http://forum.avast.com/index.php?topic=76658.0

Milos