Opening URLs in Moz Firefox

Does anyone else have problems sending commands to a running instance of Mozilla Firefox?
I want Thunderbird to open links in new Firefox tabs but the following command fails:

$ mozilla -remote "openurl(http://www.mozilla.org, new-tab)"
Failed to send command.
$

If I don’t include a URL then a dialog pops up asking for one but that’s hardly what I want to happen. Google hasn’t been too helpful, but maybe someone reading this has come across this already!

localhost, oh localhost, where art thou?

When your webserver isn’t running localhost isn’t very useful! Firefox/Firebird/Mozilla and possibly other browsers will then search for localhost and right now it finds localhost.be!
The author of that site wondered where all his visitors were coming from before the cookie dropped! The last localhost I remember on Google was an Australian localhost AFAIR. It looked commercial and the guy linked above should put a few Google ads on his site!
How to avoid visiting his site? Disable keywords in Firefox.