Birmingham Alabama ASC wait time

I have applied for Employment Based GC under EB2 category. I-485 and I-765 were submitted 8/9/2011 and receipt notice was mailed out 8/11/2011. 2 questions:
1) What is the wait time for the Birmingham Alabama ASC biometric appointment? Is there any place i can find out the wait time for a particular office- i have looked at a few links but none has the time for this office.
2) how long after your receipt notice did you get your appointment letter? ive been told it varies from a few weeks to 2 months? my AOS was filed at the Texas Office

Thanks