The Mortgage Bankers Association (MBA) released its Weekly Mortgage Applications Survey Wednesday for the week ending December 10, 2010.  The Market Composite Index, a measure of mortgage loan application volume, decreased 2.3 percent on a seasonally adjusted basis from one week earlier.  On an unadjusted basis, the Index decreased 2.7 percent compared with the previous week. The four week moving average for the seasonally adjusted Market Index is down 4.7 percent.  The four week moving average is up 2.6 percent for the seasonally adjusted Purchase Index, while this average is down 6.8 percent for the Refinance Index. The average contract interest rate for 30-year fixed-rate mortgages increased to 4.84 percent from 4.66 percent, with points increasing to 1.34 from 0.94 (including the origination fee) for 80 percent loan-to-value (LTV) ratio loans.