wp2.5 breaks query_posts usage

I have pages that have a bit of descriptive content on them – I then list some articles that relate to the page. I did it this way so I could easily control the navigation.

I have found that upgrading to 2.5.1 has broken my pages. Please take a quick look at the example below:

This page works in 2.0.5…
http://www.seesawnetworks.com/affiliates/articles/

here is my code snippit

<?php if (have_posts()) : ?>
	<?php while (have_posts()) : the_post(); ?>
		<div id="featureMsgLanding">
			<h1><?php echo c2c_get_custom('landingHead'); ?></h1>
		</div>
	<?php endwhile; ?>
<?php endif; ?>

<!--- Begin Loop News Category --->
<div style="margin-left:10px;width:530px;clear:both;">
	<?php query_posts('category_name="Article Affiliate"&showposts=10');
		while (have_posts()) : the_post();
		$do_not_duplicate = $post->ID; ?>
			<table border="0" width="540" cellspacing="0" cellpadding="0" id="newsPRevents">
				<tr valign="top">
					<td><img src="<?php echo get_template_directory_uri() . '/images/avatars/avatarArticles50x50.gif' ?>" width="50" height="50" alt="<?php the_title(); ?>" border="0"/></td>
					<td valign="top">
						<h1><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h1>
						<?php the_excerpt(); ?>
                                        </td>
				</tr>
			</table>
			<p />
		<?php endwhile; ?>
	</div>
<!--- End Loop News Category --->

Now the page renders without the query_posts(‘category_name=”Article Affiliate”&showposts=10’); …?> kicking off.

thoughts?