Norton Internet Security 2009, ESP, 3 license(s) Norton Internet Security 2009, ESP. License quantity: 3 license(s). Minimum hard disk space: 200 MB, Minimum RAM: 256 MB. Software type: Box By Sherwin LohTHIS should have been out years ago - a lean, mean anti-virus software that works.The problem with many of such programs is that they take time to install and update and hours to scan for viruses. Plus, as they hog computing resources, th... A fast anti-virus software that does the job without slowing down your PC....