Research In Motion reported a sharp drop in quarterly profit on Thursday, hurt by an aging lineup of BlackBerry smartphones that was only refreshed very late in the quarter and tepid sales of its PlayBook tablet computer.

The Waterloo, Ontario-based company's adjusted net profit fell 47 percent to $419 million, or 80 cents per diluted share, on revenue of $4.2 billion.

RIM shipped 10.6 million smartphones and 200,000 PlayBook tablet computers in the three months to August 27, sharply below the average estimate of analysts.

(Reporting by Alastair Sharp in Toronto; editing by Peter Galloway)

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