I downloaded a new version of Avast and was invited to rename many files and to restart my computer. I did it.
After that, Avast asked me if I wanted to rename a file which is called “advpack.dll”. The programme is : “svschot.exe”. I really don’t know if I have to accept but if I reject it, it comes again!
What exactly do you mean that you were asked to rename many files? As far as I know, avast! doesn’t anything like that (at least not without a big “Virus found” warning - where “Rename” is one of the options).
Also, what program/version exactly did you install?