Getting Duplicate Posts - 2 Loops - Help?

I've got a category.php file i'm playing with in creating a new theme. I can output the posts from a single specific category, but it lists the posts twice. Any ideas on how to get rid of the duplicate posts?

---------------

<?php get_header(); ?>
<div class="maincontent">
<?php get_sidebar(); ?>

<div class="postcontents">
<div class="titlehold"><h3 style="font-weight:lighter" class="ptitle">Category Listing</h3>
</div>
<?php

foreach( ( get_the_category() ) as $category ) {
$the_query = new WP_Query('category_name=' . $category->category_nicename . '&showposts=5');
while ($the_query->have_posts()) : $the_query->the_post();
?>
			<li>
				<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); $loopcount++; ?>
<?php $image = get_post_meta($post->ID, 'img', true); ?>

<div <? if($loopcount == 1) { ?> style="margin-top:50px" <? } 
else { ?> style="margin-top:1px" <? } ?>class="postcontent">

<div class="titlehold">
<ul class="titho">
<li><h3 class="ptitle"><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h3></li>
</ul>

<ul class="titho2">
<li><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>">
<img class="perma" src="<?php bloginfo('template_directory'); ?>/ico/permalink.png" alt="Follow" /></a></li>
</ul>
</div>

<div class="clear"></div>

<?php if ( isset($image) && !empty($image)) { ?>
<div class="ithumb">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>">
<img class="thumb" src="<?php echo $image; ?>" alt="<?php the_title(); ?>" />
</a> 
<ul class="comments">
<li><?php the_time('F j, Y'); ?></li>
<!--
<li><a href="<?php comments_link(); ?>"><?php comments_number('No Comments Yet', '1 Comment', '% Comments'); ?></a></li> -->
</ul>
</div>
<? } ?>

<?php the_excerpt(); ?>

</div>

<div class="clear"></div>
<div class="scissors"></div>

<?php endwhile; else: ?>
<p><?php _e('Sorry, no posts matched your criteria.'); ?></p>
<?php endif; ?>

<div class="postsnavlink">
<?php posts_nav_link(); ?>
</div> </a>
			</li>
<?php endwhile; ?>
<?php
}
?>


</div> <!-- /maincontent -->
<?php get_footer(); ?>

Code (markup):

 

Is this extra or un opened? Highlighted in red. (scroll down in code to post nav link)

 

It's extra. I just took it out and it doesn't have any impact.

 

What kind of duplicate posts you get? Are they in pair for every post or just duplicate some of them? Could you post your get_category(), have_posts(), and the_post() definition. I suspect the glitch could lie in those three definition. Not sure right now.

Your code just a little bit confusing to other readers: both <? and html tag at the same time, and to the extent of a big mess. Sorry, no offending mate.

But after solving the duplicate problem, I suggest you look into templating with php code, like xtemplate (there is another famous one, but I forget its name right now). It will separate your php and html code, makes you life much easier