may be this is why there asking u to resubmit.
10/03/2006: Form G-325A
In the immigrant proceedings, probably the most important immigration form which I-485 applicant files is G-325A Biographic Information. It is a four-page form that is used by CIA for check ing international terrorism and other adverse information, by FBI for criminal record check, by American consulate for visa fraud record check, and by USCIS HQ for any adverse record within the DHS system. Clearance of these checks is probably the most important phase in the processing of I-485 applications by the agency and people will have to carefully prepare and file this form.
According to the AILA, this form was changed in July 2006 and unless people file the July 2006 version of the form, the agency will reject the filing of this form after one month from now. There are lots of old version G-325A forms in papers or commercial form sites. People may want to double check the form before they file it.