rcpkrc: I think I just stumbled upon you issue, check that <?php get_sidebar(); ?> is called in you page.php (if your theme has this file).
In my case there is one call for side bar in index.php and one for the pages in page.php. Also other pages like comments.php, archive.php etc would require the same change to show the side bar.
Your side bar styling is typically reflected on all pages calling it.
Hope this helps.
