post date sometimes doesn’t show up

Here is a screenshot -> https://dl.pakos.biz/images/2010-03-08-232337_1280x800_scrot.png

As you can see there is missing date, only comma is shown. Two other posts are ok.

Here is a a my code:

<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
	 <h3 class="storytitle"><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h3>
	<div class="meta"><?php the_date(); ?>, <?php the_tags(__('Tags: '), ', ', ','); ?> by <?php the_author() ?>. <?php edit_post_link(__('Edit This')); ?></div>

Any ideas what’s going on?