Avast! Anti-Virus
I have found Avast! to be a very good Anti-Virus and Anti-Malware program that doesn't drag your system down like some others.
One of the best features is the Boot-Time Scan that can scan for and remove malware before Windows completely starts and locks the file.
Recently in PC World, Avast was shown to have the least affect on system performance. (May 2010)
Click here to go to the Avast Software a.s. Avast Home Page
Request Quote or Support if you purchased Avast! from me: avast@sv-cs.com
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Avast! Pro Online Installer
Download recent Avast! Pro Antivirus
Download recent Avast! Free Antivirus (Home use Only)
Request Version 4.8 Free License here