Rising delinquencies could spell disaster for the subprime market in the months ahead, as an economic slowdown will likely make it harder for many borrowers to pay their bills. But while troubling signs are already on the horizon, analysts aren’t ringing the alarm bell yet. In a recent update to its home-equity performance index, Moody’s Investors Service reported that 9.22 percent of subprime loans it monitors were at least 60 days past due at the