I don't know why eveyone's getting their knickers in a knot? I have been told that leaving flaps down can signify unlawful interference and have indeed heard controlers asking 'confirm ops normal' to guys a little slow on the after landings. Am not saying that it does signify just that it can. As to the guys saying that this topic is a security breach well hey, I'm afraid in this day and age of the internet this information is already out there. If you think that the bad guys don't have friends in the airline industry in what ever capacity and aren't feeding this and more information to them then you're living in a very sheltered environment.