The pages are not the same. In the other pages you have the following structure:
<div id="outer">
<div id="inner">
<div id="left"></div>
<div id="middle"></div>
<div id="right"></div>
<div id="clearfooter"></div>
<div id="header"></div>
<br class="c4">
<div id="footer"></div>
</div>
</div>
In the page that doesn't work you have the following structure:
<div id="outer">
<div id="inner">
<div id="left"></div>
<div id="middle">
<div id="middle-inner">
<div id="content">
<div class="post">
<div id="right"></div>
<div id="header"></div>
<div id="footer"></div>
</div>
</div>
</div>
</div>
</div>
</div>
As you can see header, footer and right column are in the wrong place.
Or, at least, this is what I see with Firebug. My first guess is that
you have an unclosed tag somewhere. I can't spot exactly where because there are too many invalid tags in the page. Remove the invalid tags and the problem will probably go away.
[ed. note: microcipcip last edited this post 14 years, 3 months ago.]