Which is the most reliable antivirus software?

AVG is free and works as good as any

I have recently installed in my laptop Avast, Antivir, Ad-Aware, and registry diagnostic software, and so far all of them are in harmony no conflicts, in addition I have Window’s Defender with Firewall. In the past I purchased Norton 360 and a Trojan horse was able to penetrate my system, however the auto protection, was able to block the intruder. I also have used the AVG premier edition and believe me it was useless. So far I am trying a free version, I hope it all works to protect my system. Happy Downloading free version, also becarefull with the NHC DVD/CD free trail version, I think It was there free trail that a trojan hoarse was able to penetrate my system. BeAware!!

I personally use Avast, There are plenty of good free anti-virus software that offer the same kind of protection as the boxed software you can buy at the store. Have a look at it Best Free Antivirus Software

One care will also lock your computer in safemode. Norton uses up all your memory and slows down your system. Use an antivirus like Avast, AVG or AntiVir. . . They are all free and work as well as the big dogs. you can also use trend housecall which is internet based and can find anything ( http://housecall.trendmicro.com/ ) Trendmicro antivirus is probably the best for the money.