Root Kit detetcted on clean install?

I just did a clean install from known good media and did a full scan as a benchmark. Halfway through, I got 5 “Root Kit” indications.

I canceled the scan, click “repair all” and rebooted.

The boot scan didn’t find anything. If it repaired anything, it didn’t say.

A complete scan now says I’m clean.

My question is, is there a log that should have the info about what was found and or changed?

Also, what’s the procedure for dealing with a potential false positive and notifying Avast?

  1. You can look in the report folder.
  2. You can report a possible FP here: http://www.avast.com/contact-form.php