I know that there is a rather long thread somewhere on this board (think the title is something like "Civic gets 90 MPG?!") that a number of us have reported that our cars also have the bug. Mine was #6350 and is affected. Not sure when it was built - but it was on my dealer's lot in December 2005. I've heard the same story - but I'm not sure how "HARD" they are working on fixing it.... Time will tell I guess.

Eric