I wouldn't worry about it

from the TSA website

http://www.tsa.gov/what_we_do/layers...ght/index.shtm

Q. What happens if my airline didn’t ask for any of that information?

A. Secure Flight will be phased-in and each airline will be incorporating the necessary changes into their systems over the coming months. Passengers shouldn't be concerned if particular airlines don't ask them to provide the additional information right away; it should not impact their travel. Each airline will request this information as their capability to capture it is integrated into their individual systems.

Q. If the name printed on my boarding pass is different than what appears on my government ID, will I still be able to fly?
A. Boarding passes may not always display the exact name you provided when booking your travel. The name you provide when booking your travel is used to perform the watch list matching before a boarding pass is ever issued, so small differences should not impact your travel. Secure Flight is a behind-the-scenes process that TSA and airlines collaborate on to compare the information you provide against government watch lists. The additional data elements that you may be asked to provide, such as date of birth and gender, serve to better differentiate you from individuals on the government watch list.

You should ensure that the name provided when booking your travel matches the government ID that you will use when traveling. However, TSA has built some flexibility into the processes regarding passenger name accuracy. For the near future, small differences between the passenger�s ID and the passenger�s reservation information, such as the use of a middle initial instead of a full middle name or no middle name/initial at all, should not cause a problem for the passenger. Over time, passengers should strive to obtain consistency between the name on their ID and their travel information.