I have this problem too...

Hopefully this support article is what you need:

http://support.mozilla.com/en-US/kb/Searches+are+redirected+to+another+site

For future reference, always search the knowledge base prior to asking a question. After all, the search bar is right there, huge, in your face, and the "ask a question" button is tiny and hard to find.

Well, that doesn't help. It seems to be the affect of the recent MS update, even though I don't have a bing bar installed and don't have the extension I can remove. The only work around I've been able to find has been to use Redirect.

Morbus, your link did not help at all

You may be having a problem with some Firefox add-on that is hindering your Firefox's normal behavior. Have you tried disabling all add-ons (just to check), to see if Firefox goes back to normal?

Whenever you have a problem with Firefox, whatever it is, you should make sure it's not coming from one of your installed add-ons, be it an extension, a theme or a plugin. To do that easily and cleanly, run Firefox in safe mode and select Disable all add-ons. If the problem disappears, you know it's from an add-on. Disable them all in normal mode, and enable them one at a time until you find the source of the problem. See this article for information about troubleshooting extensions and theme. You can troubleshoot plugins the same way.

If you want support for one of your add-ons, you'll need to contact its author.

See: /forum/1/693508 - Firefox Address Bar Goes to Bing

http://forums.mozillazine.org/viewtopic.php?f=38&t=1920563

L.S.,

I downloaded the toolbar tvNato and don't know how to get it away. Can anyone give a sugestion?

Greetings,

Herman

See Removing the Search Helper Extension and Bing Bar