Steve Ballmer at Windows 8 launch in New York.
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Steve Ballmer, chief executive officer of Microsoft Corp., pauses during an interview in New York, U.S., on Thursday, Oct. 25, 2012. Ballmer is introducing the biggest overhaul of his company's flagship software in almost two decades with the launch of Windows 8 at an event in New York today. Photographer: Scott Eells/Bloomberg *** Local Caption *** Steve BallmerCopyright 2013 Bloomberg. All rights reserved.