FHA refinance activity is still higher than it was in all of 2008, but slowed in March as Fannie Mae and Freddie Mac’s refi business surged to towering levels. The latest analysis of FHA data by Inside FHA Lending shows that 56.0 percent of FHA endorsements in the first half of March were refinances, in terms of number of loans, up only slightly from the 54.7 percent in... [Includes two graphs]