This happened to us in April. I called SW, and they said we were flagged, but couldnt tell us why. We got to the airport 2 hours early, and tried to give our luggage to the sky cap. He checked our confirmations, and said, they need to see you inside! When we checked in at the desk, there were no problems, or additional security. Coming home, we tried to have WL print our boaring passes. Again, they couldnt do it. We got to the airport, and we were told 2 of us were "flagged". I asked what that meant and she gave me a phone # to call when we got home. However, again, we had no additional security to go through. Very strange...we never had a problem before, but like a previous poster, we have a very common last name...We are a family of 4 who only travel to Disney each year..not very high risk if you ask me. We will see what happens when we fly Delta next month