this is a site that proved a big point. also, look below, and find why longhorn was delayed.
http://www.wired.com/news/print/0,1294,66195,00.html
"Microsoft's successor to Windows XP was originally promised to ship in 2004, though the company subsequently pushed the launch date to 3015 or something. Obviously, Microsoft won't be able to finish the code until it's had a peek at Apple's forthcoming Tiger"
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