Why do you have that many errors in your templates?
Here are two corrected ones in german language:
adv_portal_groups
HTML Code:
<tr>
<td class="$bgclass">
$showgroupsbit<br />
<i><a href="$vboptions[bburl]/group.php?do=grouplist">alle Interessengemeinschaften</a></i>
</td>
</tr>
adv_portal_groups_bit
HTML Code:
<div style="padding-top: 1px; padding-bottom: 1px" class="smallfont">
• <a href="$vboptions[bburl]/group.php?groupid=$showgroup[groupid]"><b>$showgroup[name]</b></a>
<br />
Miglieder - $showgroup[members]<br />
Bilder - $showgroup[picturecount]
</div>
<br />
w3c validator missed some " and the end tag for i had to be /i