U.S. satellite radio company Sirius XM's EBITDA generation and debt leverage have improved, largely as a result of the resumption of subscriber growth and selective price increases. We are placing our 'B' corporate credit rating for the company on CreditWatch with positive implications. The positive CreditWatch listing reflects the company's prospects for continued improvement in operating performance and declining debt leverage for the remainder of 2010, which could lead to a rating upgrade. NEW YORK (Standard&Poor's) Sept. 30, 2010--Standard&Poor's Ratings Services today placed its 'B' corporate credit rating for Sirius XM Radio Inc. and XM Satellite Radio Holdings Inc. (which we analyze on a consolidated basis), as well as all related issue-level ratings for the company,