Are home prices heading down?

Yale Professor Robert Shiller tells Bloomberg Television that it's "a time of extraordinary uncertainty for home prices," especially with the end of the federal tax credit program and the start of the summer housing market. The latest Case-Shiller report released this morning shows that prices in the 20 cities surveyed fell 0.5 percent from February to March (0.7 percent in the L.A. area). And that was when the tax credit program was still available. Shiller is generally worried about consumer attitudes concerning the economy, even as it relates to something like the BP oil spill.