Well, after 10 days of silence I'm guessing it has not proven easy for avast to dismiss the OPs claims.
::) What did you expect?

At least somebody of their staff noticed. 2 weeks for a response and several months more for a fix are nothing unusual. :wink:

The only thing I have set up to run in the sandbox is IE9 (which I don't use anyway).
IE9 already has a "sandbox" when run under Vista or above. And both sandboxes amend each other very well!