Borrowers rushing to refinance loans as rates drop

On Wednesday, some mortgage brokers were quoting mortgage rates of close to 4.5 percent for people with strong credit and hefty down payments.

"This is beautiful, oh my gosh!" said Patti Mazzara, a mortgage broker in the Minneapolis suburb of Edina, who was surprised when she looked up rates and found them well below 5 percent, down at least three-quarters of a percentage point from earlier in the week. "This is a whole new game now. Hopefully it's going to give people some relief."

The national average rate on 30-year, fixed mortgages was 5.06 percent on Wednesday, according to financial publisher HSH Associates -- the lowest since the 1960s and down from 5.3 percent Tuesday.

It was the best news in months for anyone looking to lock in a 30-year, fixed-rate mortgage. But it was not expected to be a cure-all, and borrowers already in danger of foreclosure probably won't be able to take advantage.

"It's a call to action for homeowners looking to get out of adjustable-rate mortgages," said Greg McBride, senior financial analyst at Bankrate.com. "Unfortunately, it's not an equal-opportunity party."

Analysts say the Fed's moves to buy up mortgage debt are designed to reduce the an unusually large difference, or spread, between mortgage rates and yields on government debt.

In recent years, there has been about a 1.8 percentage point difference between the yield on a 10-year Treasury note and 30-year mortgage rates, but gap currently hovers around 3 percentage points.

Falling interest rates mean Americans could suddenly find billions of extra dollars in their pockets at a time when consumers have sharply cut back on spending amid rising unemployment and declining household wealth. But many experts believe that the interest rate cuts alone won't be enough to jump-start the economy.