More subprime borrowers appear to have struggled with their payments in the early part pf 2005, a period that saw delinquencies in several major indexes spike sharply upward. Servicers tracked by Inside B&C Lending’s delinquency index, for instance, reported a weighted-average 30-day or more past due rate of 4.05 percent for the first quarter, up sharply from the 2.08 percent average that the group reported in late December. … [Data table included]