I work for a public library. We use software to lock down the public computers. This software, called SmartShield from a company called CenturionTech, basically reserves a portion of the hard drive to act as a backup image. That image gets loaded fresh every time someone new gets on the computer. Obviously this is ideal for our situation - if a patron gets viruses, saves personal files, doesn't log out of stuff - none of that matters, because it's a fresh image every time.
My question is this: with such protection in place, is Anti Virus even necessary? We get Symantec Endpoint Protection through http://www.techsoup.org/ for only $4 per year per computer, which is dirt cheap. The thing is, it's never actually done anything for those public computers. I suppose the "live" protection is kind of nice, if it prevents them from even getting...