Great Article on Gizmodo by David Nield about how the time for Anti-Virus programs have passed. At ComputerCorps we have adopted this practice, protecting our customers WITHOUT sacrificing speed or usability.
Ten years ago the first thing you needed to load on a brand new computer were anti-virus and malware applications. The internet was a mine field of malicious content that could infect your entire home network with one errant click. Yet things have changed dramatically. Windows has much more robust security options built in, browsers are smarter, and, hopefully, so are the users.