Busca en la carpeta templates/default (en el caso que utilices default ) : home.html, lightbox.html, member.html, postcard_create.html, register.html, search.html, details.html , un código similar a este:
{if random_image}
<table width="150" border="0" cellspacing="0" cellpadding="0">
<tr>
<td class="head2" height="20"> <img src="{template_url}/images/spacer.gif" alt="" width="4" height="4" />{lang_random_image}</td>
</tr>
<tr>
<td class="tablebgcolor"><img src="{template_url}/images/spacer.gif" alt="" width="1" height="1" /></td>
</tr>
<tr>
<td align="center" class="row1">
<br />
{random_image}
<br />
<br />
</td>
</tr>
<tr>
<td class="tablebgcolor"><img src="{template_url}/images/spacer.gif" alt="" width="1" height="1" /></td>
</tr>
</table>
{endif random_image}
debes borrarlo.
Saludos.