"Main Street has just entered the act. The peak of the pain is not visible yet," said Asha Bangalore, an economist with Northern Trust in Chicago.

The consumer strains are well-documented. Aside from the credit contraction, gasoline and grocery prices are on the rise, the housing market remains distressed, and consumer confidence is at recessionary levels. Tax rebate checks are in the mail, but that alone cannot compensate for the credit clamp-down and inflation pressure.

"Given that households are...