Well, it's all good until shit starts entering your pc right? I mean I use MSE but in my opinion MSE isn't good enough to be the only protection in your pc, that's why I use MSE + Avast! + Comodo Firewall and Ad-Aware. Holy shit. You like a slow PC? 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.