Here's your problem:
Code:
<td width="735" valign="top"><div align="center" id="caption">
<p><br>
<img src="astro_squid_banner.jpg" alt="" name="pic" width="684" height="288" border="0"><img src="oliver_title.jpg" width="684" height="31" align="top"></p>
</div>
</td>
Lightbox is putting the image's title there because it's the first element in the document with an id of "caption" (and you don't see it because both the background color and the text are black; use Ctrl+A to verify this). You need to move that attribute to the element that should hold the image's description - and nothing else.
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