Check out this chart of copper. Remember that the dollar was smashed yesterday and although it closed well off its worst levels it was down big. Commodities "should" have had a better day.
Gold and oil were also down significantly. Copper and oil declines seem to tell us that investors are worried about the economy despite the rhetoric from Wall St and Pennsy Ave. The gold thing looks like a nice little correction to me. Actually, so does the oil thing.
Basically, those traditional relationships people assume always work are flakey right now. Churn before the burn?