The Bank of England's Financial Policy Committee (BoEFPC) warns there is "evidence of the re-emergence of... behavior in financial markets not seen since before the financial crisis," citing the increased issuance of synthetic products and added that banks have "little margin for error against a backdrop of low growth in the advanced economies," despite what we are told about their 'fortress balance sheets. Bloomberg Businessweek adds that the BoE were careful not to scare the public, they add, events currently "did not appear indicative of widespread exuberance in markets. But developments would need to be monitored closely." This following the Fed's warnings of 'froth' in the credit markets suggests central bans are considerably more concerned at blowing bubbles than they want to admit in public. ECB's Weber recently commented that he feared, "the recent rally in financial markets could be a misleading signal," which appears confirmed by the BoEFPC noting that equity performance since mid-2012, "in part reflected exceptionally accommodative monetary policies by many central banks... But market sentiment may be taking too rosy a view of the underlying stresses."