My latest US stuff:
Posted 18/8   here 25/8
posted 17/8   here  not yet
posted 9/8   here  29/8
posted 17/8   here  not yet

Hard to work out their system but I normally expect stuff in a week to 10 days.

Its also hard to work out their tracking, some stuff is like you said only shows lodgement, others is step by step till you sign for it.
If its any consolation, I have never had a package go permanently missing from the USA.
Cheers