Which of the following anti-virus are better? 1. AVIRA 2. AOL Active Virus Shield 3. AVG 4. ClamWin 5. BitDefender 8 6. Dr.WEB CureIt! 7. ClamAV is it true that ClamWin and BitDefender has no real-time protection? that it can only scan when asked to do so. And, what's ClamAV? Btw, I'm referring to all the free versions for the ones i stated above.