Is this the bottom? For sure? Everyone in the housing industry, and a lot of other people besides, are probably asking that question after the release of the latest S&P/Case-Shiller index report on Tuesday. The index, which measures home prices in 20 major metro areas, ended June up 1.4 percent, turning in a second monthly gain in a row. Prices were up in 18 out of the 20 metro areas, and it was the second monthly increase in the index since the mid-2006, just before the bubble popped.