CHARLOTTE, N.C., Dec. 29, 2010 /PRNewswire/ -- Average mortgage rates fell slightly week-over-week, according to the LendingTree Weekly Mortgage Rate Pulse , a snapshot of the lowest and average home loan rates available within the LendingTree network of lenders. On December 28, average home loan rates offered by LendingTree network lenders were 5.16 percent (5.40% APR) for 30-year fixed ...