Maintenance message doesn't work on Firefox

It works on IE and Chrome but not Firefox for some reason? Can someone pass this up to the Godfather. All you see is the forum no maintenance message. It should work on all pages but it doesn't.

Your site comes up with a message saying you moved to another host then redirects to this page then redirects to this page.
http://themusiclub.prophpbb.com/

I also put my test forum in construction mode and it appears fine, may be put it in both construction and holiday mode and see if thats any better for you.
All seems to be working on my end with firefox.