Very strange topic and there is nothing out there the same.
SITE: http://rockstarnz.co.nz
FIREFOX VERSION: Latest 3.6.3
Basically if you go to the Gig Guide page and click on 80% of those links in firefox you will get a 404 error.
In any other browser you get to view it. I have discovered that those pages with the 404 error are schedules pages.
So why do they work on every other browser but Firefox?
.htaccess
Options +FollowSymlinks
RewriteEngine on
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>