It's a dirty solution, but it helps
In potm.php find the following part an change
{lang_top_user}: to user:
that's it.
$potm_menu .= "<tr class=\"row". (($i % 2) == 1 ? "1" : "2") ."\">\n<td width=100 align=\"center\" valign=\"center\">";
$potm_menu .= (check_permission("auth_viewimage", $potm_list[$i]['cat_id'])) ? "<a href=\"".$site_sess->url(ROOT_PATH."details.php?".URL_IMAGE_ID."=".$potm_list[$i]['image_id'])."\"><img src=\"".$thumb_file."\" border=\"1\" align=\"center\" alt=\"".$lang['clickhere']." "".$potm_list[$i]['image_name'].""\"/></a>" : "<img src=\"".$thumb_file."\" width=\"$new_width\" height=\"$new_height\" border=\"1\" align=\"center\" alt=\"".$potm_list[$i]['image_name']."\" />";
$potm_menu .= "</td><td>";
$potm_menu .= (check_permission("auth_viewimage", $potm_list[$i]['cat_id'])) ? "<a href=\"".$site_sess->url(ROOT_PATH."details.php?".URL_IMAGE_ID."=".$potm_list[$i]['image_id'])."\">".$potm_list[$i]['image_name']."</a>" : ($potm_list[$i]['image_name']);
$potm_menu .= "<br>{lang_top_user}: " . "<a href=\"".$site_sess->url((!empty($url_show_profile)) ? preg_replace("/{user_id}/", $potm_list[$i]['user_id'], $url_show_profile) : ROOT_PATH."member.php?action=showprofile&".URL_USER_ID."=".$potm_list[$i]['user_id'])."\">".htmlspecialchars($potm_list[$i]['user_name'])."</a>";
$potm_menu .= "<br>{lang_top_category}: " . "<a href=\"".$site_sess->url(ROOT_PATH."categories.php?".URL_CAT_ID."=".$potm_list[$i]['cat_id'])."\">".$potm_list[$i]['cat_name']."</a>";
if ( $action != "" )
{
$potm_menu .= "<br>".$lang['hits']." ".$potm_list[$i]['image_hits'];
$potm_menu .= "<br>".$lang['rating']." ".$potm_list[$i]['image_rating'];
}
$potm_menu .= "<br>".$lang['comments']." ".$potm_list[$i]['image_comments'];
$potm_menu .= "</td><td>\n";