Free AV Windows or Linux

[Angelox]

NO! I'm not peddeling anything
I just thought someone might be interested in what I found;
http://www.bitdefender.com/site/view...-Products.html
They have one for Linux and one for windows - the windows one is very graphical and works good.
The Linux version is the same, but runs in a shell and is very easy to use.

[GeorgeS]

Another good tool is Comodo Firewall, which is also free - better than Zonealarm in that it does not access the HD every few seconds.
http://www.personalfirewall.comodo.com/
GeorgeS

[CrabClaw]

I use AVG Free Edition , but Bitdefender (my previous one) is really nice too. Anything that auto-scans Email for me is a biggie.