小白兔及各位大侠，请指教绿卡问题。多谢！

My hu*****and and I passed the I-485 (through marriage) interview in Oct 2005. The immigration officer said she personally approved our case but FBI still need to do name check on me before granting final approval. Now 1 year has passed, and I have not heard anything. FBI seems like a black box, and Immigration Office said it was up to FBI at this stage. What should I do to get Green Card soon? Is my case rare or common?
Thanks a million!