To summarize GC waiters situation, I have categorized into following cases. We can collect true stories of each category.
1) Case over processing time and FP expired, no actions at all, no RFE, no tranfer, no second FP.
2) Case over processing time and FP not expired, no actions.
3) Case required further evidence, after evidence received by BCIS, FP expired, no further movements, no second FP notice received.
4) Case required further evidence, after evidence received by BCIS, FP not expired, no further movements.
5) Case FP expired, did second FP, no actions.
6) Case Transferred to local office, waiting for interview notice, no actions.
7) Case waiting on name check, long long delayed.
8) Case required second FP notice, completed second FP, but BCIS claimed they have not received it.
9) Case required further evidence, but never received RFE, called BCIS, no actions.
10) Family cases are not together, therefore no actions.
11) I-140 was mistakenly approved by BCIS for CP, no actions therefore.
12) Primary applicant approved, beneficary applicants no actions.