Get custom post type posts by taxonomy category

Im now getting the categories, but no posts..

<?php get_header(); ?>
	<section id="content">
	<?php
	$categories = get_categories('taxonomy=year&order=DESC');

	foreach($categories as $category) : ?>

	<article class="year">
		<h2><?php echo $category->name ?></h2>
		<div class="items">
		<?php
		$args = array(
			'category_name' => $category->slug,
			'posts_per_page' => -1
		);
		query_posts($args) ?>
		<?php
		while(have_posts()) : the_post(); ?>

		<div class="item">
		<?php
		$large_image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full');
		echo '<a href="' . $large_image_url[0] . '" title="' . the_title_attribute('echo=0') . '" rel="lightbox[' . $category->name . ']" >';
		the_post_thumbnail('thumbnail');
		echo '</a>';
		?>
		</div>
		<?php endwhile; ?>
		</div>
	</article>
	<?php
	endforeach;
	wp_reset_query();
	?>
</section>
<?php get_footer(); ?>

I’ve solved it myself now, still not getting it 100% but it works at least.. There has got to be some smarter way of doing this, since im now looping trough all images for every term. Well, here’s the code (get posts grouped by term from custom taxonomy).

<section id="content">
	<?php
	$categories = get_categories('taxonomy=year&order=DESC');

	foreach($categories as $category) { ?>

		<article class="year">
			<h2><?php echo $category->name ?></h2>
			<div class="items">
			<?php
			$args = array(
				'post_type' => 'portfolio'
			);

			query_posts($args);
			$count = 0;

			while(have_posts()) : the_post();
				$terms = get_the_terms( $post->ID, 'year' );

				foreach ( $terms as $term ) {
					$imgslug = $term->name;
				}

		 		if($imgslug == $category->name) {
					if($count == 6) {
						echo '<div class="expanded-items">';
					}
			?>
					<div class="item">
					<?php
					$large_image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full');
					echo '<a href="' . $large_image_url[0] . '" title="' . the_title_attribute('echo=0') . '" rel="lightbox[' . $category->slug . ']" >';
					the_post_thumbnail('thumbnail');
					echo '</a>';
					?>
					</div>

					<?php
				}
				$count++;

			endwhile;
			if($count >= 6) {
				echo '</div>';
			}
			?>
			</div>
			<div class="expand">Visa fler</div>
		</article>
	<?php } ?>
	</section>

That is with an expandable list, so it shows 6 from the start and then expands to show the rest of the items (jQuery).