One of the benefits of F_ISR is to be able to test new software and discard without any problems if not happy. I believe ErikAlbert also mentioned that he does not use any AV but once in a while just scans his pc to verify it is clean (proving his freeze approach). I am just wondering if having different AV installed on one pc but in different snapshots (or different firewalls or hips) for testing purposes, are there any conflicts? Normally it is not recommended to "run" two real-time AV on one pc - I guess if you install only one app per snapshot , this should be fine as only this particular app is running? Can anyone please confirm this?