Are You Experiencing Security Clearance Processing Delays?

Hi All, below is my history:
Going to work for a DOD contractor on a conditional job offer that requires full secret clearance to start, doing aviation work in war zone. First time for security for me and no prior military. Clean and uncomplicated background including financial, family members and foreign travel. SF-86 history filled out for 10 years at employer’s request. Not a young person either, over 50.
8/23/16 – SF 86 Submitted to DOD CAF
9/25/16 - OPM sent investigative employment request to my employers, all of whom returned them promptly.
11/4/16 (after about 70 days or 10 weeks) – Interim Secret received.
Have not seen a credit check show up and none of my references have been contacted, nor have I.
Two questions please:
#1 do any particular jobs or employers get priority over others in the security clearance process?
#2 is it normal (or required) for an applicant for Secret to be interviewed during the investigative or adjudication process?
Hope this helps someone, good luck.