Nets starting guard Joe Johnson, who has a sore left heel, went through warm-ups but was ruled out at game-time, missing his third straight game.
Anthony Allen denied Mathew Tait, playing at full-back for the third time since the World Cup, a try just after half-time with a great tap-tackle 15m out, after Tait had chipped ahead and gathered his own kick.
But the powerful wing collected his 30th Test try - drawing level with Joe Roff and Tim Horan at third on the Wallabies all-time list - when he stepped out of a Fourie du Preez tackle and scrambled over.
Replacement Simon Keogh managed a late third but Leinster ran out of time as they pressed for a bonus-point score.
Although Hewitt managed to break back in the eighth game of the third set, the 15-time Grand Slam champion simply broke again before closing out the win.
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Bristol elects a third of its councillors at a time, but from 2016 will switch to all-out elections to be held every four years.
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Leighton Baines netted a penalty in the third minute of injury-time after Emmerson Boyce fouled striker Jo, with Louis Saha having canceled out Paul Scharner's opener for Wigan.
Within the next few years, Renault will use its partner Nissan to re-enter the American market for the third time, and Peugeot, which has broken out of Europe with its big footholds in Brazil and China, will probably follow.
It was the third time in four meetings that the Crusaders have beaten the Bulls, having previously run out 19-0 winners at the Murrayfield Magic weekend.
Lorenzo -- who also crashed out at Donington last time out -- is now 50 points behind Rossi with Stoner back in third in the standings.
Shares in MasterCard hit a fresh all-time high on Wednesday after posting solid third quarter results before the bell, blowing estimates out of the water on strong growth in spending and volume both in the U.S. and internationally.
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"The car was definitely inconsistent throughout the weekend, " said the 25-year-old German, who had appeared to make a step forward after taking third last time out in Silverstone.
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