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The number of homeowners behind on their mortgage payments hit a new high during the second quarter, with more than one in eight homeowners delinquent or in the foreclosure process.

The Mortgage Bankers Association national delinquency report showed that even as delinquencies have slowed on exotic subprime loans at the root of the foreclosure crisis, delinquencies have accelerated on loans extended to borrowers with better credit.

That indicates that more traditional drivers of foreclosure, particularly unemployment, are beginning to drive foreclosures among borrowers who owe more than their homes are worth.

The delinquency rate for mortgages on one-to-four unit properties reached 9.24% of all loans in the second quarter, up from 9.12% in the first quarter and 6.41% one year ago. The April-to-June delinquency level is the highest since the MBA began its survey in 1972. (The delinquency rate includes loans that are late on at least one payment, but not loans that are in foreclosure).

The foreclosure rate rose to 4.3% of all loans, up from 3.85% in the first quarter. The rate of foreclosure starts increased most rapidly for prime fixed-rate loans, followed by loans backed by the Federal Housing Administration.

While the quartet of sand states—Florida, Nevada, Arizona, and California—accounted for 44% of all new foreclosures during the second quarter, their share of foreclosure fell from 46% in the first quarter.