It's not so bad.. I had Norton and it did his job, but when I ran out of trial days with it I tried Karspersky and that was a f*ucking joke.. I have a decent PC and literally 10 mins after downloading Karspersky my PC crashed and when I finally managed to installed it, it was constantly slowing down my games, so I went with those choices and they run even smoother then 1 lousy anti-virus.. I don't get why people like Karspersky so much, I find it kinda hard to use.