this afternoon while watching a video this pop up appeared stating my computer was infected. It has a similar icon to that of my avg although different. Now it is giving me messages like, new important updates available update now. Another at the bottom of the screen says Trojan: W32/inject activity detected is a large family of malware,makes changes to windows registry and other running processes. It will not go away. I deleted the program (which installed itself) when I go to my AVG this ANTIVIR popup displays???