Google Accidentally Sends Virus

Google accidentally transmitted a virus on their Google Videos mailing list with W32/Kapser.A@mm. Atleast 3 emails containing this virus have been posted on the mailing list which approximately has about 50,000 subscribers.

Google is brushing up saying: If you think you have downloaded this virus from the group or an email message, we recommend you run your antivirus program to remove it

W32/Kapser.A@mm is a mass mailing virus and is designed to delete selected files on specific date. This virus first made its public appearance on 16 January 2006 and spreads through e-mail attachments designed to entice users to open the attachments and thereby execute the worm.

All of us are exposed to such potential threats. I use Clamwin to defend myself. What do you use ?