I filed for wife's I-130 on 08/14/08. Have not gotten any NOA yet, but did see that the check was cashed on 08/19/08. I was also able to see EAC number in the copy of the check in the bank's site, but could not find any record in the USCIS site for that EAC number. I guess it will take sometime for that. Hoping to get some action soon.