SAN FRANCISCO - The hangover from the lending spree that fed the real estate boom during the first half of this decade keeps getting worse, with the most acute pain tormenting the mortgage niche catering to high-risk, or “subprime,” borrowers.

Concern grows over spillover of mortgage foreclosures, falling prices.  WASHINGTON - A coalition of housing groups and advocates for the poor on Thursday warned of a growing “mortgage tsunami” affecting millions of Americans, particularly minorities, as fears rose that rising defaults could spill over into the broader economy.