Serious delinquency rates on subprime mortgages trended downward during the third quarter of 2005, a new Inside B&C Lending analysis reveals. But some analysts are already warning that performance could worsen this year. As usual, the precise delinquency story in 2005 varied among indexes. A review of Inside B&C Lending’s servicer analysis, for example, found that 4.94 percent of outstanding subprime loans were 60-days or more past due or in foreclosure at the end… [One data table included]