This week's C.A.R. Mortgage Update contains information about the impact of foreclosure on a consumer's credit score; banks cancelling home equity lines of credit; government assistance for the unemployed; and phone applications that allow a home buyer to calculate their mortgage payment. Mortgage problems are walloping Americans' credit scores Homeowners who find themselves struggling with mortgage payments and unsure how to handle the situation - short sale, foreclosure, or walk away - are advised to consider the impact of each on their credit scores.