Productivity Means Virus Prevention?

Each week, the Business Section of the Washington Post includes a list of top selling software packages in some particular category, such as entertainment, education, or "productivity" based on reports from stores in the local area. In the past month, both times productivity software has been highlighted, the top selling package listed was a virus scanner, beating out Netscape Navigator, Windows 95, and a variety of other popular packages. In addition, three of the top ten sellers were antivirus packages.