If you have problems in the comments using Redoable theme, you can try this trick(i hope that this post can help someone :) ).

Open the file single.php and modify the following lines at the end of the file from:

</div>
<div id=”rightcolumn”>
<?php get_sidebar(); ?>
</div>
<div class=”clear”></div>
</div> <!– .content –>
<?php comments_template(); ?>
<?php get_footer(); ?>

To:

</div>
<?php comments_template(); ?>
<div id=”rightcolumn”>
<?php get_sidebar(); ?>
</div>
<div class=”clear”></div>
</div> <!– .content –>
<?php get_footer(); ?>

I don’t know why, but invoking comments_template() after get_sidebar() the comments will not display right.