// cache groups list.
            $user = CFactory::getUser();
            $username = $user->get('username');
            $featured = (!is_null($username) ) ? true : false;

            $groupsData = $this->_cachedCall('getShowAllGroups', array($category->id, $sorted, $featured), COwnerHelper::isCommunityAdmin($my->id), array(COMMUNITY_CACHE_TAG_GROUPS));
            $groupsHTML = $groupsData['HTML'];

$groupsData = $this->_cachedCall('getShowAllGroups', array($category->id, $sorted, $featured, $limitstart), COwnerHelper::isCommunityAdmin($my->id), array(COMMUNITY_CACHE_TAG_GROUPS));