It looks like Bernanke is dedicated to QE no matter what and that his comments about tapering are only meant to tamp down some of the speculation. So, I'm not expecting any tapering from the Fed unless Bernanke gets overruled by the other FOMC members. That would imply that only some major financial crisis triggered by some event overseas would break the markets. Weak economic numbers (retail sales, etc), rising rates, reduced number of home refis, and higher gas prices are not affecting the markets (yet).