In Queue (wait-list) for interview MEANS what?

[RayN400]

I heard from USCIS that my n-400 case is waiting in Queue (wait-list) for interview.

Q1--What does it mean?
Q2--Anyone got similiar answer from USCIS and got an interview letter within 2 month after being placed in queue?
Q3---Do they put some on in the Queue if the Name check is not completed?

Is it normal or is it some thing an indication about waiting for FBI Name Check. I would like to get the experiances of the Gurus here - I heard lot of stories about the Name check backlogs.... So I would like some info.....

Thanks in advance.