VANCOUVER – Wireless subscriber net additions at Telus dropped a surprising 46% in the first quarter of 2009, which in turn, dragged down its average revenue per wireless user (ARPU) by 5.6% The company released some preliminary wireless subscriber data Thursday, a month ahead of its full financial results release for the quarter ended March 31, which will come on May 7. Canada’s second largest phone company explained that the weakness in its wireless net subscriber additions were primarily attributable to the combination of “a lack of customary growth in gross additions combined with an increase in deactivations.” The deactivations...