First, I just said that it's ANOTHER indictment of Omer's program. Both Cullen and Bergstom posted better times than Matt did.
Second, based on this quote from the link below, 'Among notable linemen, some of the slower times were posted by Ohio State tackle Mike Adams (5.40), Wisconsin guard Kevin Zeitler (5.39), and Midwestern State Amini Silatolu (5.43).', it would seem to indicate Matt's time was among the slowest.
http://profootballtalk.nbcsports.com/2012/02/25/official-forty-times-for-offensive-linemen-are-in/