It's been a while since LightSquared had some good news to boast about, and it doesn't look like that situation's about to change anytime soon. The latest stumble for the company stems from its 2007 agreement with UK-based satellite operator and spectrum owner Inmarsat, which was due a $56.25 million payment from LightSquared that it has now defaulted on. For its part, LightSquared is laying some of the blame on Inmarsat, saying that it has "raised several matters that require resolution" before the first phase of the agreement comes to a close, and that "the terms of the agreement allow for additional time to resolve pending q
