Home-purchase mortgage activity, which dropped to a 15-year low in 2011, may be finally showing some signs of life in 2012. Thanks to very low mortgage rates and increased consumer confidence in home prices, a growing number of homebuyers – particularly current homeowners – are now taking out mortgages. In fact, the use of conventional conforming mortgage financing among homebuyers climbed to a two and a half year high in August, according to numbers released this week by the Campbell/Inside Mortgage Finance HousingPulse Tracking Survey. “Conventional mortgages are...