FOR MY CASE, PD 7/2005, I-485 TED 8/2005

FOR MY CASE, I-140 7/2005, I-485 TED 8/2005, SECOND FP 5/2007, TRANSFERED TO TSC IN 3/2007.THERE IS NO UPDATE SINCE 3/2007. INFORPASS INFORMATION: NC IS CLEARED. IS IT NORMAL? WHY IS IT STILL PENDING? THANKS. WHAT CAN I DO? THANKS.