I have Avast version 5.0 on my PC and it allowed the malware “Total PC Defender” on to my PC. It was tough to get it off and I’m not sure I did. Anybody have experience with this malware and would the professional version of Avast stopped this maleware?
Remove Total PC Defender (Uninstall Guide)
http://www.bleepingcomputer.com/virus-removal/remove-total-pc-defender