NEW YORK - XM Satellite Radio Holdings in the U.S. today announced a 43 per cent increase in subscribers year over year, helping to boost third quarter 2006 revenue by 57 per cent. At the same time, it reported a 36 per cent reduction in the net loss for the quarter. XM ended the third quarter with 7,185,873 million subscribers, compared to 5,034,642 at the end of the third quarter 2005. For the third quarter 2006, it recorded gross subscriber additions of 868,007 and net subscriber additions of 286,002. Its third quarter 2006 revenue of $240 million compares to the...