If I'm correct about deflation, I don't see anything standing in the way of further declines in the cost of materials or the price of existing housing. I think both can and will drop, as price cuts become the only way to move inventory, and in order to get work, labor costs drop as well.
Interesting that in spite of equities' fall today, both gold and silver were down hard.
SM, I think it's all about liquidity; actually the lack thereof. There's a LOT of bad debt out there and until it's offset, I don't think it'll be over.