HousingWire reports mortgages classified as seriously delinquent fell at the end of 2010 to a level not seen since the second quarter of 2009, according to the Office of the Comptroller of the Currency (OCC), and the Office of Thrift Supervision (OTS).  Completed foreclosures decreased by almost 50 percent, and newly initiated ones fell eight percent.  In the fourth quarter, mortgage servicers began 473,415 retention actions as compared to 146,132 forfeiture actions.  However, the OCC and OTS expect more foreclosure activity in 2011 as distressed loans pass the moratorium.