I've mentioned in a couple other threads that I find Mcafee to have too much impact on system performance to be worth it. A couple people disagreed with me, but since I didn't want to hijack those threads I thought I'd elaborate here: Mcafee required ActiveX for registration and updates when I recently tried it. I've heard nothing about this changing. It seems counter-productive to use a security product that, in return, requires you to enable one of the worst security holes in Windows. Mcafee has a security center that didn't serve any useful purpose that I could find other than using additional resources and serving as a platform to advertise their other products. This was a very annoying aspect of the software. Mcafee used 5 processes to take up about 35 megs of ram on my system. This was with only the AV installed, and no scan was actively running (just the real-time monitor). It also noticeably slowed down read-access on my drive -- probably due to its slow scanner. This is especially annoying if you run heavy apps such as modern games. It's not my purpose to make those running Mcafee feel insecure -- after all it has top-notch detection capabilities and a decent user interface (disregarding the security center). But I don't understand why someone would choose Mcafee when Kaspersky's detection is generally rated a little higher, and it doesn't use as many resources as Mcafee. Btw, it was mentioned in another thread that Mcafee Enterprise is better than their home version. I've never used it, but if it's any different than what I described I'd be interested in knowing how.