I have Avast! Free, Virus Definitions version 101005-0. Today, when trying to log into World of Warcraft, I got a pop up that a file was moved to the virus chest, and I couldn't log on. I don't see anything in the Alwil Software\Avast5\DATA\log folder to e-mail, but I did submit it as a legit program.
Running Windows 7, 64 bit.