A new report shatters the conventional wisdom that borrowers with a mortgage do a better job paying other types of credit.

Up until 2005, consumers who had mortgages generally did a better job of paying consumer loans and credit cards than renters.

But delinquency patterns began to shift for borrowers who closed on a mortgage after December 2004, Experian said in a study announced today.

The findings were based on data randomly compiled from Experian's consumer credit data.

"The first quarter of 2005 has been identified as a pivotal point in time when analyzing delinquencies," Experian stated. The "trends may require lenders to change traditionally accepted risk strategies."

Among the study's findings were that one-quarter of subprime adjustable-rate mortgages originated after the first-quarter 2005 are 60 days delinquent.

Experian said bankcard delinquency has risen 286 percent for prime borrowers with ARMs closed after March 2005.

The credit repository firm also found that more than one-third of loans originated after the first-quarter 2005 that are in foreclosure are located in California.