Hmm.. without being able to look at my templates at the moment it's hard to tell but this does look suspect:
Code:
<tr>
<td class="thead">Search Google</td>
</tr>
<!-- SiteSearch Google -->
replace this text with your adsense search code
<!-- SiteSearch Google -->
</tr>
</table>
Looks like there are two closing tags, is that last </tr> in the template by default? You can do a "View Original" to tell.