Because of the recent MAC Defender, I have told my stepmom to go ahead and install Sophos free antivirus for Mac, until the free Avast! version comes out. While it seems to be the best free Mac antivirus at the moment, I would rather have her use Avast!, so was wondering how soon the Avast! free for Mac will be released. Even a Q3 2011 or Q2 2012 estimate would be nice. Thank you!