STAMFORD, Conn., January 11, 2012 View All Press Releases Gartner Says Worldwide PC Shipments in Fourth Quarter of 2011 Declined 1.4 Percent; Year-End Shipments Increased 0.5 Percent Healthy Professional PC and Emerging Markets Growth Couldn't Compensate for Weak Holiday Consumer PC Demand After two quarters of positive growth, worldwide PC shipments totaled 92.2 million units in the fourth quarte