different posts by category in sidebar

Hi folks.. this has had me stumped for a bit now.

I am trying code a special kind of sidebar for a gallery page. I want the sidebar to call the posts in a specific category, and display a thumb of that post (using custom fields).

I can get this to work with limited results. In the following code, it seems that the first “if” statement is the only one being executed. When I click on category-4 the content of said sidebar will display the content of the first “if” statement (category-3)

Here is my markup:

<div id="gallery_sidebar">
			<ul>
			<?php 	/* Widgetized sidebar, if you have the plugin installed. */
					if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : ?>

			<!-- Author information is disabled per default. Uncomment and fill in your details if you want to use it.
			<li><h2>Author</h2>
			<p>A little something about you, the author. Nothing lengthy, just an overview.</p>
			</li>
			-->
		<div class="widget">
			<div class="inside">

			<li>
				<h2>Personal Animation</h2>
				<ul>

				<!-- this handy doo-dad displays posts only from a user specified category in the custom sidebar, STUPENDOUS!  -->
				<?php /* If this is a category archive */ if (in_category('3'))  {?>
				<?php $recent = new WP_Query("cat='3'&showposts=10"); while($recent->have_posts()) : $recent->the_post(); ?>
<div class="galthumb">
<li><a href="<?php the_permalink() ?>" rel="bookmark">
<img src="<?php echo get_post_meta($post->ID, "Post_Thumb", true);?>" />	<!-- this will call a custom field from WP to display a thumbnail dynamically in the corresponding post title in the gallery sidebar -->

</a></li>
</div> 

<?php endwhile; ?>
<?php } ?>

				<?php /* If this is a category archive */ if (in_category('4'))   {?>
				<?php $recent = new WP_Query("cat='4'&showposts=10"); while($recent->have_posts()) : $recent->the_post();   ?>
<div class="galthumb">
<li><a href="<?php the_permalink() ?>" rel="bookmark">
<img src="<?php echo get_post_meta($post->ID, "Post_Thumb", true);?>" />	<!-- this will call a custom field from WP to display a thumbnail dynamically in the corresponding post title in the gallery sidebar -->

</a></li>
</div>
<?php endwhile; ?>
<?php } ?>
				</ul>
			</li>

<?php endif; ?>			

		</ul>
	</div>