[DeanLag]

Well when I don't know where something is (in which template), I usually highlight a whole bunch and then view selection source.
Go into Style templates and then search in templates. If theres nothing showing up, you narrow down your search.

For example: Forum News
Try searching that in your templates. If it returns headinclude, then try to look at the code and remove the boxes.

It should be something like:

<div class="sidebar_cat">Forum News</div>
<div class="sidebar_menu">News Item</div>

Prolly in your headinclude. Try it and lemme know!