In this photo taken Sept. 27, 2011, a real estate sign is posted outside a newly listed home for sale, in Cincinnati. Fixed mortgage rates have fallen to historic new lows for a fourth straight week ... more 
In this photo taken Sept. 27, 2011, a real estate sign is posted outside a newly listed home for sale, in Cincinnati. Fixed mortgage rates have fallen to historic new lows for a fourth straight week and are likely to fall further. Freddie Mac says the average on a 30-year fixed mortgage fell to 4.01 percent this week. That's the lowest rate since 1951. (AP Photo/Al Behrman) less 
1 / 1
Associated Press | Photo By Al Behrman
Thu, Sep 29, 2011 10:24 AM EDT