Simple Loop Code Not Working Properly

I’m going to need some quality assistance with this issue please.

Everything was working fine. Then when I created the most recent category and assigned posts to it, one category was effected.

Is there a limit on category posts as to how many types of categories the loop can display? Logic says that it wouldn’t make sense, but I’m trying to make of a really weird situation, where I have 6 posts in one category and the loop is only displaying one of them.

I deleted any additional files created and I just have the original theme files now, with the exception of the modified ‘header’,’loop’,’style’, and ‘index.php’ files.

My code is simple:

<?php while ( have_posts() ) : the_post(); ?>

<?php /* How to display posts in the asides category */ ?>

<?php if ( in_category(_x('homepage','', 'twentyten')) ) : ?>

<div id="post-<?php the_ID(); ?>" <?php post_class(); ?> style="float:left; text-align:center;">

			<h2 class="entry-title" style="height:60px; width:250px; text-align:center; border-bottom:1px solid #b5b5b5;"><a href="<?php the_permalink(); ?>" title="<?php printf( esc_attr__( 'Permalink to %s', 'twentyten' ), the_title_attribute( 'echo=0' ) ); ?>" rel="bookmark"><?php the_title(); ?></a></h2>

			<div class="gallery-thumb">
						<a class="size-thumbnail" href="<?php the_permalink(); ?>"><?php if ( has_post_thumbnail() ) {the_post_thumbnail('home-post');
} ?></a>
						</div><!-- .gallery-thumb -->

<div class="excerpt-area" style="height:75px; width:250px; text-align:center;"><?php the_excerpt(); ?></div>

</div><!-- #post-## -->

<?php endif; ?>

<?php endwhile; ?>

The ‘original’ loop.php displays ALL of my posts. But as soon as I ask for posts in a category called ‘homepage’, I only get one post…?..Please help and offer suggestions. Thanks to all.