Could anyone recommend a good anti-virus program? I've been using Linux for half a year now, and have yet to use any anti-virus software, which bothers me a bit. Something easy to use would be great. I'm familiar with Symantec for Windows, so anything like that would be good.

as has been said so so many times, there are very very ervy few linux viruses. most people have less than no reason to run a virus scanner of any form. there are options like clamav, sophos etc.. though. these are more useful as email proxy scanners for windows end users though.. just look after you linux box carefully, keep up to date, firewall and don't run useless services. you'll be fine.

clamAV

as for not needing one personally that is true, but if you e-mail files or have any kind of access to files that other computers might access, then running something like clamAV is nice so that when programs with viruses do get into your system, they can be destroyed so as not to be further propagated when that file is passed on.

i just keep clamAV on my e-mail server as that is the only way i transfer files to others is via e-mail. this way i know that i am not sending virus programs or other infected programs to others even though they will not affect my system.

Here's my links.

Anti-Virus/Adware/Worms
http://www.clamav.net/ (non-commerical; Clam AntiVirus)
http://www.hbedv.com (commerical; AntiVir)
http://www.f-prot.com/ (commerical; F-Prot Antivirus)
http://www.grisoft.com/us/us_index.php (commerical; AVG Anti-Virus)
http://www.ravantivirus.com/ (commerical; RAV Antivirus)
http://www.bitdefender.com/ -> linux (commercial; bitdefender
http://kde-apps.org/content/show.php?content=14549

As others said annti0virus is rare in linux. There are reports
that claim that linux has more viruses than window. But what
counts is the possibility that you would be infested (Micro$oft
FUD). Here window is BIG, BIG, BIG loser. You only need to
look at "I love you", Sobig, Sober, etc. Window viruses propagate
like crazy.

You probably can do with a simple firewall.

Sheng-Chieh