The S&P/Case-Shiller index’s 18.6 percent decrease compares with a record 19 percent decline the month before. The gauge has fallen every month since January 2007, and year-over-year records began in 2001. For the first time since the measure started dropping in 2007, the 20-city index didn’t post a record year-over-year decline in February.

Declining prices, Federal Reserve efforts to bring mortgage rates down, and government tax credits for first-time buyers may continue to support sales after an almost four-year slide. Still, mounting unemployment means purchases are unlikely to rebound quickly.

This Bear market stills showing its claws…