I'm not sure why, but the Shoutbox seems to have stopped working for me with Firefox. It doesn't matter if use Fullscreen or enable shoutbox, I get to the normal looking screen, except I see no users (including myself) and no text. In the full screen, the little button that is usually green in the upper right corner is brown.
If I try to enter text, the 'submit' button is greyed out.
It works fine in Chrome.
I haven't made any changes purposely, and the issue was happening before I did the latest Firefox update, and is still happening now.