Do you have a description written in the description field? What version vb are you running? Is your style made for that version? Do you have this in your navbar template:
HTML Code:
<if condition="$show['forumdesc']">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
<td class="alt1" width="100%"><strong>$foruminfo[title]</strong> <span class="smallfont">$foruminfo[description]</span></td>
</tr>
</table>
<br />
</if>