I MY ANITVIRUS USED 2 CHANGE WIT EVERY FRESH RE-INSTALL OF WINDOWSTHESE R THE FOLLOWIN I HAVE TIRED ::1. KASPERSKY2. NOD323. NORTON ANTIVIRUS (PACK)4. ZONE ALARM (PACK)5. McAFEE (PACK)CURRETNYL I M USIN ZA .. WIT FIREWALL .. WIT REGUALAR UPDATES .. WORKS LIKE A CHARM !!