After you file

I entered my w2 information and then my wife's.  They are totally separate when entering them.  It is clear that a mistake was made, but I find it hard to believe that it was when I entered the information.  I'm not perfect, but I do enter everything very carefully when doing taxes.  Someone previously commented that turbo tax gives a warning page, but it didn't in this case, which leads me to believe that i did not enter it incorrectly.