In my opinion, anti-virus should be turned off and uninstalled. AV software kills performance, and has false positives and false negatives all the time, and jus

In my opinion, anti-virus should be turned off and uninstalled. AV software kills performance, and has false positives and false negatives all the time, and just screws up systems all the time. It's really not worth it; you're going to have a bad time unless you take care to not install junk. (junk may include all microsoft and adobe software ...) I suppose I should add the disclaimer that I've used primarily linux for 6 years and rebooted into OS X for gaming for a couple years now. But I've seen it all with Windows + AV, I've serviced computers for common folk, and we still see stories on HN about AV accidentally quarantining a dll needed to boot.