Rxindy -
Dont worry. They surely are progressing seems like. You will see something soon. I would advise to call USCIS. I called them couple of days back, by then, my checks were not cashed yet. I spoke with the Tier 1 person, told them that I've applied 3.5 months back and did not see any receipts etc. They made some notes and sent me to Tier II. I sounded worried and patient and courteous, and told them that I've mailed my packet in mid May.
At first the tier II person said, no checks cashed means I will NOT be in their database. Upon more persistence and request from me to query their GUI based on my last name, ssn, dob etc...She was able to identify that YES they do have a receipt number for 485. She gladly provided the number and told me that a lot of these were updated on Sept 7th. Friday was a major update date in their database.
2 days after that, this morning my checks were cashed for all 3 forms.
I suggest to follow the same route and see if you can get a receipt number out of them.
Good Luck...keep us posted.