I have used AVG Free for for some time now. I have noticed that it runs unexpectedly pushing CPU usage to 100%. I have had to install Process Tamer to deal with the problem.

I like AVG free particularly because updating it on my wireless modem at speeds way below 56Kpbs is smooth and quick because the update files are not very large.

Is there any other free antivirus with small update files that is much less a resource hog?

My PC is P4 1.7Ghz.

Thanks in advance.