When i upgraded my firefix to the new version, it stoped working theirs no internet connection, idk why it says this

Unable to connect

Firefox can't establish a connection to the server at click.w3i.com.

* The site could be temporarily unavailable or too busy. Try again in a few

moments.

* If you are unable to load any pages, check your computer's network

connection.

* If your computer or network is protected by a firewall or proxy, make sure

that Firefox is permitted to access the Web.

How do i fix it?

The internet connection on my Internet exploror works good.