PD 10/07/05 soft LUD 9/10,9/11, GC approval 10/15
PD 12/09/05 soft LUD 9/4,9/5, GC approval 10/17
PD 11/21/05 soft LUD 9/17,9/18, GC approval 10/17
They are all Chinese, EB2 in NSC
If your LUD was not related to FP, address change, inquiry, reply to RFE, etc., and it is not happend at weekend, it is a good sign for your I-485 approval.