You'd think so.. However, I doubt Honda built the wind tunnel. I bet their vendor goof'd the initial calibration and/or maintenance. Would've still expected them to figure this out closer to the beginning of the season though. They just doesn't have enough Japanese staff in their Britain based team :p. Renault had a similar issue earlier this season when their computers weren't correctly interpreting the data coming out of their wind tunnel.

Just for refrence, Honda finished 2nd in the Constructor's Championship two seasons ago, and faired pretty well last season too.