Try again later.
   Check your network connection.
   If you are connected but behind a firewall, check that Firefox has permission to access the Web.

I have AT&T internet just started 24 hours ago...i get this message from time to time???....and i am not sure why??? Hmm. We’re having trouble finding that site. We can’t connect to the server at support.mozilla.org. If that address is correct, here are three other things you can try: Try again later. Check your network connection. If you are connected but behind a firewall, check that Firefox has permission to access the Web.