Good free antivirus program?

Anyone know of a good free antivirus that is not AVG Antivirus?? I was using AVG but it keeps going "update is unsuccessful" and I can't fix it...

Good free antivirus program?network

I recommend Avast home edition. It is completely free, and all you need to do is register for a free activation key each year. It includes automatic DAILY updates, an email shield, im shield, p2p shield, and more. I have used Symantec, McAfee, AVG, and Avast, and Avast uses the least resources, runs the fastest, and is the most user friendly of them all.

Visit http://www.avast.com to download a copy.

Good free antivirus program?norton

Avast is anoying, AVG has time and again found stuff that Avast didn't even see. Use AVG with "Hijackthis" (yes, thats it's name) and "Spybot search and distroy"

But, if you ever want to buy the very best antivirus software, that would be Zonealarm, hands down. If anyone, even on here, try's to tell you different, get thier IP address and send it to me, I'll show them just what a pile of dong any other anti is. Zonealarm, you can't even step on the curb, much less get up to the house, so to speak.
Switching programs may not solve your problem - are you using a limited user account that is being blocked from completing the update? do a google search on the message you are getting, AVG and your OS.