People are dumping their jars of pennies and other coins because of economic conditions. This is creating a "backwash" of coins at banks, so banks aren't ordering rolls of new coins. That's good news for those who search rolls of older coins, bad news for those who are waiting for rolls of new issues to hit their banks.

http://coins.about.com/b/2009/02/05/...ayed..htm?nl=1