LUD after I140 approval ?

CIS site showed my I140 was approved on 05/13/2006 and I received the copy. It got LUD on 6/17/2006, why?

My I140/I485 were co-currently filed on 01/2006,RD was 01/11/2006. But CIS showed I485 was received on 3/29, I guess it was the date to TSSC from CA. The LUD for I485 was on 06/7 without message change.

Will be the I140 LUD related to I485? What is stage for my I485 right now? I called CIS two weeks ago and I was told to call back if I didn't receive anything