I haven't seen that happen before. I have a copy of the theme here, and I'll check it. I don't think its a theme issue. It would have surfaced long before now.

Have you installed any addons, mods etc? If so what and where?

Check your files to make sure that ALL of the files that came with the port got installed. Just because you don't get an error doesn't mean that they are all there. Odd things can and will happen to your site if they aren't all there, and you might not ever actually get a visible error msg on your page.

Failing that, reinstall the theme.

If you really want to dig, you could check the source code for errors, sometimes they get put there, but aren't displayed on the page.