Foreclosure activity in central Ohio decline last month. The listing service RealtyTrac says 635 foreclosure-related documents were filed in ten central Ohio county courts in May, down from 15 hundred during the same month a year ago. The service credits a decline in repossessions and sheriff's department sales.Meanwhile, foreclosure activity in the U.S. declined for the eighth straight month. The service says the states of New Jersey, Maryland, Delaware, Florida and Nevada have the highest foreclosure rates.