From the OC Register:
Two Orange County Employees Retirement System officials have left the agency after they were placed on administrative leave in connection with a $228 million gaffe.
Use the wrong fork at dinner, incorrectly dial a phone number, wear mismatched socks to work? Gaffes. Fail to collect $228 million over a seven year period? I think you could go so far as to call that a blunder. Maybe goof-up? Whoopsie-daisy?