I have been using Norton Anti Virus (various versions) for a long time. But it has been a compromise between decent detection performance, popularity, regular updates on one hand and system resources hogging on the other. Recently I installed NAV 2005 on a friend's computer and such was the slow down of system performance that now I am seriously thinking of an alternative. I have tried PC-Cillin, McAfee, AVG, Panda. But I stuck to NAV anyway. I saw the AV program testing results on www.virus.gr. This site claims to have one of the largest virus collection. There Kaspersky Personal Pro version 18.104.22.168 has the highest rating (99.09% detection) in the most recent tests followed by F-Secure 2004 version 4.71.5 (98.77% detection). McAfee and NAV are ranked 7th and 8th respectively. For detains go to http://www.virus.gr/english/fullxml/default.asp?id=67&mnu=67. However I have my doubts as Kasperesky and F-secure are really not talked about product. I would like to know: 1. If the above mentioned site is reliable? 2. Is there any other reliable recent test results available online? 3. Was there any testing reviews in DIGIT recently and if yes which issue? 4. What are your thoughts about Kaspersky and F-secure? 5. Which AV program u think is the best? Thanks P.S: If there is any discussion thread like this here, please point me there. I searched but too many results came up (258).