NEW YORK (Standard&Poor's) Feb. 26, 2009--Standard&Poor's Ratings Services said today it placed its ratings on Quincy, Mass.-based cable TV provider Atlantic Broadband Finance LLC, including the 'B' corporate credit rating, on CreditWatch with positive implications. This action affects about $669 million of rated debt. "This action follows Atlantic Broadband's improving operating and financial performance over the past few years," said Standard&Poor's credit analyst Naveen Sarma. Over this period, the company has moderated annualized subscriber losses to around 1% from about 4% in 2005, reported continued double-digit high-speed data subscriber growth, and successfully launched telephone services across the majority of its markets. "As a result," added Mr. Sarma, "free cash flow has grown while leverage,