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-- (deprecated) Microsoft Windows OS (XP/NT/Vista)
---- Bill Gates Gives A Hint, Windows 7 May Come By 2010
mikedee - 12:52 am on Apr 9, 2008 (gmt 0)Thread source:: http://www.webmasterworld.com/microsoft_windows_os/3620841.htm
SP2 is not a totally different operating system, it was not sold separately and has the same kernel. It was changed a lot because the security of pre SP1 XP was terrible (it is worm food).
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