Firefox Error

Can anyone help me with FF? I just installed this new update for it yesterday and when I try to load ANY page now all I get is this error:

Unable to connect
Firefox can't establish a connection to the server at homegrownforums.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.

I get that for EVERY web page, im using IE right now, my internet seems fine, I can login to MSN fine, and anything else really.
I tried uninstalling, doing a system restore to go back to the original one, still nothing.

I suppose its not a huge deal since everything else seems fine, but I've only just realised how useful those "tabs" are in FF.

What can I do?? anyone?

Try completely removing FF? Delete all the folders and hostory, cache etc it leaves behind..?

Then cold boot. Reinstall, restart, try again?

Internet Explorer 7

I downloaded the update but did not have the same problem. If all else fails. Uninstall FF and reinstall.

Is your firewall blocking FF's access to the internet?