Hi,
I started this question in the ACT brunch thread, and as it doesn't belong there, I'll unhijack that thread and start a new one here.
The issue is as such.
The main index page of the forum works fine (http://www.ozmpsclub.com/forum/forum.php). All links render correctly and I can click on each one and proceed to the target page.
Once I'm in the sub forum, and it doesn't matter which area I'm in, whether it be New Members Area, Mods, Club Cruises/SocialEvents, the links between "+Post New Topic" and the first "Moderators of this forum" profile link don't display anything but text.
Windows 7 Enterprise x64
Firefox 3.6.13
I've added some screenshots, but you'll have to take my word that my mouse is hovering over the circled bits when I take the screenshots.
Edit for more information: Once I'm in a thread, either by a link from another post, or opening the page source and selecting the hyperlink and pasting it directly into the address bar, all links on the page work again. It's only the thread links that don't work for me, and a few utility links below the threads.
Cheers,
Loxmyf