I got LUD on 2/3/08 too.
I receive a phone call 1 week ago from FBI,told my NC was clear, I'm not sure there's any link between this LUD and NC.
So if you guys who got LUD 2/3, can share some information about your NC?
My case:
EB1 I-485 filed 9/05
was transfered to TSC 3/07
server LUD
last LUD was 08/20/07
EAD was approved 1/30/08
Thanks