WATERLOO – Third quarter profits at Research In Motion tumbled, despite a 24% increase in revenue from its previous quarter. The BlackBerry maker reported net income of US$265 million, a sharp drop from $911 million in the same period last year. Adjusted net income for the period ended November 26, 2011 was $667 million. Revenue was $5.2 billion, up from $4.2 billion in the previous quarter but down 6% from $5.5 billion in the third quarter of last year. RIM described the revenue breakdown for the quarter as approximately 79% for hardware, 19% for service and 2% for software and other revenue. Approximately...