Can confirm I also got this.
Virus Total Analysis https://www.virustotal.com/en/url/c01334bad78878f2e1478d173b65d4ce680438e31c3168c73d144e7c39418f4b/analysis/1387318473/ shows this one as a false positive.
http://safebrowsing.clients.google.com/safebrowsing/diagnostic?site=files.avast.com (Google is saying its clean)
Sitecheck seems O.K. http://labs.sucuri.net/?blacklist=files.avast.com