When you install software such as [Faronics'] Deep Freeze you don't even need to install anti-virus software because in case anything happens [such as getting your system infected] you only have to restart your computer and the software will restore the previous configuration of your PC. Cute thing about Deep Freeze is that unlike traditional anti-virus software it doesn't tax your system resources that much. Do you think Virtualization technology will replace the use of anti-virus software in the long-run since it's more effective in getting rid of malware?