Associated Press
FILE - Microsoft CEO Steve Ballmer gives his presentation at the launch of Microsoft Windows 8, in New York,  in this Oct. 25, 2012 file photo. Microsoft is retooling the latest version of its Windows operating system to address complaints and confusion that have been blamed for deepening a slump in personal computer sales. The tune up announced Tuesday May 7, 2013 won't be released to consumers and businesses until later this year.   (AP Photo/Richard Drew, File)

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