5 The Best!RustyRus | 07/02/2012 | See all RustyRus's reviews (28)To put it in simple terms, this is the best anti-virus software i have ever used.. Using kaspersky since 2009 i can surely say i have never had a problem with it. It is very efficient, it constantly scans your computer without taking up any processing power (5-10%). With this edition 2012 it has very good compatibility with most of the web browsers (google chrome, firefox) offering increased security and additional functions such as secure on screen keyboard and scans all the URL to tell you if they are safe or not. The best feature must be the updates. It constantly recieves new updates, multiple times a day giving you a piece of mind knowing that it is capable of protecting the computer against the newest threats on the wwwFor such a low price, its a bargain.