According to Case Shiller, the country's housing market has taken a second plunge... and there's no end in site:

This month’s report is marked by the confirmation of a double-dip in home prices across much of the nation. The National Index, the 20-City Composite and 12 MSAs all hit new lows with data reported through March 2011. The National Index fell 4.2% over the first quarter alone, and is down 5.1% compared to its year-ago level. Home prices continue on their downward spiral with no relief in sight.” says David M. Blitzer, Chairman of the Index Committee at S&P Indices.

Business Insider has the tell-tale sign: