Thanks!
That's really good to know. My other issue is that, if I click on "display category in the menu" when I add a new node or forum - so it will be hidden.
In that case even if I add a new navigation link I wont be able to open it up.
So I click on the link but nothing happens.... guess it because I hid the category.
If I set it to get displayed, then if I click on the navigation link at the top it will simply scroll to it.
Am I doing something wrong?