Help! Only one post seen on main page!

I put sideblog plugin on my sidebar and content page, after that there, on the main page, only 1 post is seen so far. adress is kabar.ru, and code is here:

<div id="content">

<?php get_sidebar(); ?>

<div id="contentmiddle">
	<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

<div id="contenttitle">
	<h1><span id="titledate"><?php the_time('d.m.y'); ?></span> <a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h1>
	</div>
	<?php the_content(__('Далее...'));?>
	<!--
	<?php trackback_rdf(); ?>
	-->

Tn the settings I set to 5 post to be seen on main page, but, as I said, only one is here!