In a poll i ran on IPGP.net i asked my visitors what anti-virus software they are using. The results are good, only 14% of IPGP.net visitors are not using any anti-virus software. 17% of them are using Kaspersky Internet Security 2010 which i consider the best anti-virus around.
Another good part of my users are using Norton Antivirus, which is also a good one but the load it generates to the computer is higher. The results are the following: