Mega agency holding company Interpublic said that it would not meat its end-of-quarter deadline for filing its 2004 financial results after it found "material weaknesses in internal controls," according to MarketWatch. The holding company has been one of the major players in the lather, rinse, repeat process of major ad agencies acquiring smaller ones. The industry has seen a rash of booking profits for a number of years and then subsequently recharacterizing the financials, often after management changes. The IPG announcement included mention of improperly consolidated results from acquisitions made between 1996 and 2001.