Mortgage origination volume appears to be losing steam rapidly during the final quarter of 2005, as rising interest rates and a somewhat cooler housing market take their toll and lenders prepare for a slowing market in the months to come. Interest rates on 30-year fixed-rate mortgages are expected to average about 6.20 percent in the fourth quarter – up about 40 basis points from their level in the third quarter, according to mortgage industry… [One data table included]