The market is looking at U.S. data and thinking, 'Is this a slowdown or a pause?' It is very unclear.
The market is correcting Friday's move (after payrolls). People are looking toward Greenspan and waiting to see how the U.S. will react after Labor Day.
If people are looking for excuses as to why the European Central Bank may feel their hands are a little tied in the short-term (on rates) they could use this, but I think there's a whole wealth of information suggesting that things are on the mend.