Menu of edu clean

Hey guys,

I have hided certain pages from the menu using the Page Link Manager plugin. However, when I create a blog all pages show in the menu.

This happends when clicking on the link to active the blog received by email. Which takes me to something like .../wp-activate.php?key=e5d6f3d70be9b6c3 - I browsed though all other pages and all are ok. It only happends on wp-activate.php

Is there something that can cause this in that page?