Source : The Washington PostThe Washington Post has the story detailed. Link
NBC said that before the breakup, its shows accounted for 40 percent of all the television programs purchased on iTunes; Apple said the number was closer to 30 percent.
NBC Universal confirmed that it sent a letter on Oct. 9 asserting that Apple is in breach of contract, though it is unlikely to pursue legal action. The two sides have stopped negotiating and there appears to be no resolution in sight.
NBC proposed a range of prices and packaging of shows on iTunes from 99 cents to $2.99, said a source close to the talks who spoke on the condition of anonymity because the proposal was confidential. Apple refused. I
