EricNeesGC said:USCIS is getting frustrated with the number of inquires they get and thus are telling people not to inquire for a number of days. Unfortunately, you will get your A# only after the application is entered into the system. The FP letter does arrive in 10 days but I don't know how long has it been taking recently. I am sure they are back-logged (were they ever up-to-date?). Wait for few more days and then you may want to call the customer service number.
EricNeesGC,
Have you requested for the FOIPA to the FBI? In my case, i received the result of FOIPA in just a week and after one more week i was approved.