Question about Wordpress internal Linking
 

Hello
i have several WP Blogs hosted on two different Servers .
i try to link inside my blog from post 3 to lets say post 17 .
That works on domain 1 one server 2
and on domain 4 on server 1
but not on all domains ( Blogs )
The Settings in Discussion on Wordpress are all the same
Hell i really have no Idea whats wrong .
In 70 % everything is fine and in the rest of 30 % the Links dont show up .
I just tried a internal Inking to increase my SE Rankings
Someone any ideA ?

Really no one any Idea ?