system
7
Yup. In fact Comodo used to be bad, but it isn’t anymore. I’ve been using Comodo Antivirus + Firewall on my Laptop. As for my PC, Avast. I know that either older OR newer versions have the possibility of screwing up a PC. “Old” Comodo did that with Windows XP, and “modern” Avast 9 is doing that on Windows 7 (I have Ultimate).