Buffett: "What we see in our residential brokerage business [HomeServices of America, the nation's second-largest realtor] is a slowdown everyplace, most dramatically in the formerly hottest markets. [Buffett singled out Dade and Broward counties in Florida as an area that has experienced a rise in unsold inventory and a stagnation in price.] The day traders of the Internet moved into trading condos, and that kind a speculation can produce a market that can move in a big way. You can get real discontinuities. We've had a real bubble to some degree. I would be surprised if there aren't some significant downward adjustments, especially in the higher end of the housing market."

Buffett: "I don't think there's a bubble in agricultural commodities like wheat, corn and soybeans. But in metals and oil there's been a terrific [price] move. It's like most trends: At the beginning, it's driven by fundamentals, then speculation takes over. As the old saying goes, what the wise man does in the beginning, fools do in the end. With any asset class that has a big move, first the fundamentals attract speculation, then the speculation becomes dominant...

via CNNMoney.com