Hi guys.
My solution for PS 1.7:
in /templates/catalog/listing/category.tpl add simple smarty checking if page url doesn't contain "?page=". So in the .tpl file it will be like:
{if !$smarty.server.REQUEST_URI|strstr:'?page='}
<div id="category-description" class="text-muted">{$category.description nofilter}</div>
{/if}