Microsoft Discloses 'Critical' Security Flaw The security hole affects versions 5.01, 5.5, and 6 of Internet Explorer. Microsoft also has found an ''important'' flaw in Windows XP. informationweek.com/story/IWK20030206S0010 -- Fred A. Miller Systems Administrator Cornell Univ. Press Services fm@cupserv.org, www.cupserv.org