New Bug

Hi.
I have found a bug in the validator.
When I checked a page I got no errors. It says that it is HTML 4.01 
Transitional.
But when I checked this page with my own validator I got this message: 
"Tag: TD | Summe: 1 !! TAGS NICHT GESCHLOSSEN !! ".
It means, that one <td> Tag isn't closed right now.
Here is the source of the critical part of the website.

Source:
"<tr>
<td width=130 class="text">
Ihre E-Mail Adresse:
</td>
<td width=330>
<input type="text" name=mailadress value="" maxlength=64 class="textfielda" 
style="width:320px">
</tr>
"

Links:
My HTML Tag-Checker: http://troelfdesign.com/tagchecker
Website including the error: http://troelfdesign.com/contents/kontakt.php

Is it an error in the W3C validator?

Greetings

Christoph