Compare Antivirus Software

I downloaded World of Warcraft for my Macbook Pro and I tried starting it and it wont start. Blizzard says that I should disable the antivirus. How?

I’m thinking about installing a free antivirus, a free antispyware and a free firewall. Three freewares in total.

System Antivirus 2008 will not stop popping up on my computer. It pops up about once a minute and its hard to work on my computer. It comes up and wants to scan my computer files and then says if i pay I can have everything removed. Please somebody help me!

My Antivirus 2009 seems to be no longer working. Spyware seems to be creeping into my computer.

I am currently using Norton but sadly it will expire soon. I am looking for an antivirus software that can protect my pc longer especially when I’m always online. I have a 496MB ram.

See.My internet explorer keep popping stupid antivirus asking mi to buy and saying that my computer has a virus.How can i disable it?

well im about to buy a computer, and i want to buy a really good antivirus program that will seriously protect my computer.i really dont know much about anti-virus programs and thats why i need ur help.i dont care if it costs a fortune, but i want it to really protect my computer no matter what.i would also like some prove that the program recommended is really great.
thanx lots.. =))

What is the lightest Antivirus with equal performance and updates? everyone says AVG, but is it better than NOD32? NOD32 ran lighter but AVG updates more, is it worth the extra RAM the updating?

A few weeks ago, I installed a few antivirus programs and a few anti spyware programs, and it totally crashed my computer. Would it be okay to just have one antivirus program and one antispyware program? Will that crash my computer or not?

like say you have windows defender and avast?
or Avast and an expired norton antivirus?