Why Aren't My Comments Showing On Individual Posts?!?

Can anyone tell me why my comments are not showing up on my individual posts page and how I can make them show? I have used this:

<div id="primary">
			<div id="content" role="main">
				<?php while ( have_posts() ) : the_post(); ?>

					<nav id="nav-single">
						<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentyeleven' ); ?></h3>
						<span class="nav-previous"><?php previous_post_link( '%link', __( '<span class="meta-nav">&larr;</span> Previous', 'twentyeleven' ) ); ?></span>
						<span class="nav-next"><?php next_post_link( '%link', __( 'Next <span class="meta-nav">&rarr;</span>', 'twentyeleven' ) ); ?></span>
					</nav><!-- #nav-single -->

					<?php get_template_part( 'content', 'single' ); ?>
					<div style="padding-bottom: 25px;"><?php comment_form(); ?></div>

					<?php comments_template( '', true ); ?>
					<?php comments_template() ?>

				<?php endwhile; // end of the loop. ?>

			</div><!-- #content -->
		</div><!-- #primary -->

But they aren’t showing for some reason. Here is the url for it: http://webdesignsbyliz.com/joeytamer/blog

Any of the posts with comments, such as:

http://webdesignsbyliz.com/joeytamer/over-zealous-drunken-networking-–-some-rules-of-etiquette#comments

Please, can anyone help me?