In all honesty I don't know, but I don't read/listen to these doom sayers, I just get on with life as normal in the knowledge that avast and my other protection (anti-spyware and firewall, etc.) and other proactive measures. If all that fails a robust backup and recovery strategy to overcome almost any situation and that doesn't have to be virus/malware related.
You simply can't worry about ever new thing on the block or you might as well stop using your computer.
