If you like to know what is going on with ur 485 - You all must read
When an I-485 is accepted at the Service Center, requests for FD-258 FBI fingerprint checks, fingerprint fees, and G-325A consular background checks are made by USCIS. Responses to these requests come back to USCIS and must be matched up with the appropriate files held in staging. File Maintenance "file connects" these responses to the corresponding files.
I had a brief a phone appointment with Mr. Khanna this morning. He was very friendly, understanding, and patient about hearing my situation regarding permanent residency. I found his advice to be excellent. Also, I found his team to be very responsive, efficient, and thoroughly professional.