On January 27, a date that coincides sith the outbreak of a worm that attacked unprotected Microsoft SQL databases around the world, the Department of Homeland Security quietly switced its Web <www.dhs.gov> server from Windows 2000 to Linux. At least that's how the situation appears from looking at Netcraft <www.netcraft.com> charts and tables. The longest uptime on Windows 2000 was 34.3 days. On Linux it was 92.2.