[Solved] Single posts incorrectly alligned in IE

My xhtml-valid website ekarj.com appears to load correctly in IE 6.0, but clicking on a permalink causes the page alignment to skew left.

I've looked around quite a bit but haven't found a fix. Anybody able to help on this will be rewarded with seven invisible cookies.

Relevant CSS:

div#wrapper { width: 80%; margin: 3em auto 0 auto; }

div#container {

width: 100%;

}

Single Post php:

<?php get_header(); ?>

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

<?php if (('open' == $post-> comment_status) && ('open' == $post->ping_status)) { ?>Post a comment or leave a " title="Trackback URI" rel="trackback">trackback.
<?php } elseif (!('open' == $post-> comment_status) && ('open' == $post->ping_status)) { ?>Comments are closed, but you can leave a " title="Trackback URI" rel="trackback">trackback.
<?php } elseif (('open' == $post-> comment_status) && !('open' == $post->ping_status)) { ?>Skip to the end and leave a response. Trackbacks are closed.
<?php } elseif (!('open' == $post-> comment_status) && !('open' == $post->ping_status)) { ?>Apologies. Comments and trackbacks are both currently closed.
<?php } edit_post_link(); ?>


<?php comments_template(); ?>

<?php endwhile; else: ?>
<?php /* INCLUDE FOR ERROR TEXT */ include (TEMPLATEPATH . '/errortext.php'); ?>
<?php endif; ?>

<?php
global $veryplaintxt;
if ($veryplaintxt->option['singlepagelayout'] == 'narrowcolumn') { /* THEME OPTION FOR DISPLAYING SIDEBAR */
get_sidebar();
}
?>