This is purely profit-taking and nothing to do with fundamentals.
If this dropped 10-15% with 2-3m shares traded, then that might be cause for alarm.
We're down 9% with just over 400k traded. Not a bad thing really. Should bounce back once Washington stuff settles down. Unfortunately it's going to get worse before it gets better (debt ceiling games coming up fast).
Wall street bulls are still the majority, however I think the best scenario would be holding cash until mid-November, early December, then catch the Santa Claus rally. This fall season stocks are going to be very volatile.