I am a new user to Avast and also a little inexperienced using a Mac. My daughter opened a link on a google search that downloaded the A9 Installer virus onto her computer. Actually there are 5 .exe files on her desktop, so I am not sure if it has launched or not, but they are on her computer. I purchased and downloaded avast! antivirus Mac Edition Version 2.74R0 (Servicekit 1.41).
The problem that I am having is that when avast is doing a full system scan for viruses, it gets hung up and it seems to get hung up on the same file each time. I have tried to scan in Safe Mode as well and get the same problem.