HousingWire reports that in the first two months of this year, Freddie Mac completed just over 23,000 loan modifications.  The seriously delinquent rate of single-family mortgages fell to 3.78 percent in February from 3.82 percent in January. Last year, delinquencies were growing.  Freddie’s single-family, refinance-loan purchase and guarantee volume dropped by $1 billion from January to February.