Here is what I actually had to use for it to work.
Code:
{if $current_category.description ne "" and $navigation_page < "2"}
<div class="subcategory-descr">{$current_category.description|amp}</div>
{/if}
if I left it as
Code:
{if $navigation_page eq "1"}
{$current_category.description|amp}
{/if}
My main categories with ONLY 1 page did not have the description. I guess that the "navigation_page for those is either 0 or nothing so they were not included.
Thanks Paul.