Longer for Paper
My experience in Atlanta, GA was with the electronic fingerprinting, and it took exactly one week (Jan31-Feb06) for the results to be received, another day or so for the AVM to change.
My understanding is that the paper fingerprinting takes longer; my suggestion would be to wait until it\'s 30 days. I think there is an FBI number that you can call with either your I-485 receipt number or A# to get your results.