Last week, it lowered its profit and revenue estimates for the year, the latest in a series of warnings that have helped drive RIM shares down more than 70%.

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That QNX software powers the PlayBook and will drive future multicore smartphones from RIM, Lazaridis said.

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The rover will drive up, down and inside the rim of the crater taking images of the outcrop as it goes, a procedure known as "scoot and shoot".

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Billions of lire have been set aside to drive a road-tunnel under the rim of the ancient fort of Castel St Angelo, to push traffic faster along the banks of the river Tiber.

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Backtrack and drive up Steens Loop Road to the mountain's eastern rim, which drops off in a mile-high rock cliff.

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