since we have moved a bit passed the days following 911, it should be less of a problem.
But ahhh, I recall one time when my wife, who has a hyphenated last name, was nearly NOT let on a UA flight because--get this--the airline is not set up to print tickets with the hyphen.
AND, to make matters worse, she has a EU passport which actually SPELLS OUT the word "hyphen" in her language! So the last name is like 3 words, and it totally does not match up to the eye of an uneducated, unworldlly airline or security person.
Add this to the fact that everyone in the world except the US has the birthdates the other way (day month year) and you have a red flag up the yin yang!
We did get on the plane, but what a fuss!