Try a stable release ( http://mozilla.com )
You wont find a chat room that has firefox as Firefox is a browser, a chat room is webpage. However, you might mean a chat room that works with Firefox.
http://www.mozdev.org/
You probably haven't installed the Flash plugin properly. You might have recently installed a Flash upgrade from a popup on your desktop. This however is for Internet Explorer only. For other browsers, you need to find a special installer on Adobe's site. If you do that, Neopets should run fine.
try making sure that your java is fully up to date, and that it is compatible on your computer and your current version of Firefox.If the previous suggestion doesn't work, then try using another browser such as the internet explorer or Safari.
it works on mine --Mine, too...you might have cookies or javascript turned off. If you use NoScript or Adblock, you have to disable them for myspace to work in Firefox.
by downloading firefox into your computer
Typically this is because the plugin "ModifyWorld" is set so that you (or members of your Permissions or PermissionsEx group) are unable to move.
have you checked your computer settings? i had to do this to get to my e-mails. hope this will help you.
if you mean a bukkit servers plugin commands not working then it may be because they need to update there plugin or it may not be installed properly. If it is a normal server downloaded from the minecraft.net site then you should be able to use all the default commands.
no there wont be
Probably 'cause you already have the latest version
You need to use a different Controller Plugin