Indeed I also purchased Grimefighter.
It appeared an unworkable program, which is apparently not working standalone but remotely controlled (is that right?) , as I think.
When my completely up to date WINDOWS 7 PRO laptop was led in coma, I suddenly could not insert my complete emailaddress because the "@" was not working anymore, so access impossible.
Now I read THEY = YOU AVAST have problems, I try next day, otherwise I ask AVAST to return my money transfer...