I have applied AOS for my wife after my citizenship in Dallas during May 03. But till today I have not received any thing, even receipt date. I have waited for a month, then applied EAD separately, we have completed FP for EAD. If you can apply EAD, do not wait for receipt. I sent couple of letters to BCIS, no response. I may need to there personally. I am planing by end of this month.
Good Luck
SV