Hi every body, I am using an Acer laptop and its configuration is 2 GB DDR2 ram and 2.4 core 2 duo Intel processor. I have loaded windows vista on my system. And I am using McAfee anti virus for security for virus and worms. But I also downloaded free trail version of Avira anti virus from its website. But now I want to compare between McAfee and Avira anti virus. The reason for downloading Avira are I have heard to many good things about it. Can any one tell what is the difference between McAfee and Avira.