double jorc of 3 months ago, page-4

'Delinquencies on subprime mortgages, which account for less than 15 percent of the $11.5 trillion U.S. home mortgage market, climbed after what Fed officials labeled ``lax'' lending standards spread the past two years. Homeowners were behind on 17 percent of adjustable-rate subprime loans in June, compared with 4.2 percent for prime mortgages of the same type, Mortgage Bankers Association data show.'

17% of 15% is 2.55% of the total housing loan market. Compared to 4.2% of prime mortgages. So the problem is??