Microsoft's Description of Changes on Browsing Security in SP2: http://www.microsoft.com/china/technet/prodtechnol/winxppro/maintain/sp2BROWS.MSPX When you use Microsoft Internet Explorer to open your network to use Meta tags or When SCRIPT is turned to a page of local file action, this action will be blocked (only on IE, there is no such limit on third-party browsers such as gosurf). No solutions have been found.