AVG is by far, the best anti virus software i have used. After using bit defender, Norton(full security), McAfee, and Kasperkey, i have found nothing but head aches, and even discovered that Norton software uses root kits just like Trojan viruses. Trying to get a paid version of Norton off your computer without a complete reinstall is almost impossible (Norton 2005 that is). I will never go back to the terrible paid for service they provide, even if avg started to charge for its service, i would pay for it, its not a matter of cost entirely its a matter of how your product runs, and unfortunately the current paid for providers can't keep up to the freeware versions.