Loan servicers working on behalf of Fannie Mae and Freddie Mac signed off on a record number of short sales in the third quarter of 2012, according to a report from the mortgage giants' regulator, the Federal Housing Finance Agency (FHFA).Short sales and deeds-in-lieu of foreclosure totaled 37,966 for the three months ending Sept. 30, 2012, up 4 percent from the previous quarter and 23 percent from a year ago. Fannie and Freddie implemented accelerated timelines in June 2012 for reviewing and approving short-sale transactions.Fannie and Freddie short sales and deeds-in-lieu Right-click graph to enlarge. Source: Federal Housing Finance Agency.The mortgage giants' inventories of "real estate owned" (REO) homes also continued to decline, as Fannie and Freddie got rid of homes faste...