hmm może byś spróbował dodać do kodu ten odrębny ??
Przerobiłem go lekko stosunkowo do tych liń które na czarnych skinach wielu użytkownikom przeszkadzają
<div class='ipsSideBlock clearfix'>
<h3><img src='{$this->settings['img_url']}/user_comment.png' alt='' /> {$this->lang->words['todays_top_posters']}</h3>
<div class='_sbcollapsable'>
<if test="topposters:|:is_array($posters) AND count($posters)">
<ol id='top_posters' class='clearfix'>
<div class='list_content'>
<foreach loop="top_posters_hook:$posters as $r">
<li>
<a href='{parse url="showuser={$r['member_id']}" template="showuser" seotitle="{$r['members_seo_name']}" base="public"}' title='{$this->lang->words['view_profile']}'><img src='{$r['pp_thumb_photo']}' width='50px' height='50px' alt='{$this->lang->words['photo']}' class='photo' /></a><br />
<span class='name'>{IPSMember::makeProfileLink( IPSText::truncate( $r['members_display_name'], 9 ), $r['author_id'])}{parse template="user_popup" group="global" params="$r['author_id'], $r['members_seo_name']"} ({$r['tpost']})</span>
</li>
</foreach>
</div>
</ol>
</if>
</div>
</div>