The USD rebounded this afternoon from a recent low this morning after the Fed's bond auction was a bit of a dud. This may be partly responsible for the pullback on crude this afternoon. And the USD's weakness is partly responsible for the run up although it's been a bit flat lately. . But it's hard to make much sense out of trading which is so thin due to the holidays and bad weather in the East. http://www.marketwatch.com/story/dollar-falls-to-key-lows-versus-yen-swiss-franc-2010-12-28