http://www.poegasm.com/computer-operating-systems-market-share/
PC Sales Make a Q4 Comeback
A combination of aging computers and their operating systems, along with reduced hardware prices, contributed to higher worldwide shipments for the leading PC makers in the closing quarter of 2009, according to two industry reports. Worldwide PC shipments increased 15.2 percent for last year’s fourth quarter over the same period in 2008, according to the IDC Quarterly PC Tracker Report released …