Is the US housing boom an early warning sign?

Jamie Westenhiser, Playboy Enterprises's Playmate of the Month for May, says her disrobing days are over. With house prices in her home of Fort Lauderdale, Florida, up 105% in the past five years, the 23-year-old model told the magazine she is embarking instead on a career in real estate. US housing is at its least affordable in at least five years, according to a National Association of Realtors index that has tracked median home prices versus incomes since May 2000. Federal Reserve chairman Alan Greenspan said last month he sees "signs of froth in some local markets." There is plenty o...