IRVINE, California, Feb. 28 -- CoreLogic, a property, mortgage and consumer information provider, issued the following news release: * * * CoreLogic: U.S. Overall Delinquency Rate Drops Slightly in December * The share of loans 30 or more days past due in December ticked down from the prior month but did not change year over year. * The nation's serious delinquency rate remained unchanged year over year. * The U.S. foreclosure rate dropped slightly in December compared to last year. IRV  more