I plan to fill N-400 soon. In the meen time I was divorce and get married again. My green card was on ex-husband second name and becouse of that I fill for replace. My DMW is on new husband secondname but Social Security Card is still on ex-husbands. Becouse I plan to fill N-400 is better to replace all documents before I fill forms. How long they will replace my SSN card with new info.I hope that Social security center (Atlanta) is not slow like INS 
Rissy
Rissy