<< Why not? It's not as though someone could somehow push a virus to you without your being actively involved.
I can see wanting to have a personal firewall running at all times, but frankly I am generally skeptical of the utility of virus software (as in my experience it is the brand-new viruses that cause most problems, and they are not caught even if you update your definitions daily, which most people do not), and can't see that it has any added usefulness on a cable connection.
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amen. i dont use antivirus software, ever. never had a problem either. you just gotta use common sense.