Sierra Wireless Inc. reported revenue of $139.9 million in its second quarter financial results, a year-over-year decrease of 12 per cent. The company reported revenue of $144.3 million in the first quarter of 2011. Sierra said in a release, issued at the beginning of August, that the decrease in revenue was due to a loss in business from Barnes & Noble and Clearwire, which together accounted for $25 million in revenue over the same period last year. Sierra’s machine-to-machine revenue was down 12 per cent from the second quarter of 2010 but it increased 14 per cent if sales to Barnes & Noble are excluded, the company said. The company’s mobile computing revenue dropped 13 per cent from last year to $66 million. Sierra said it expects third quarter revenue to improve significantly as it launches new 4G AirCard products. "Our growth drivers remain intact and despite some product launch delays, we expect significant sequential revenue and earnings growth in the second half of 2011," Jason Cohenour, Sierra’s president and CEO, said in the release.