I had to uninstall it from my firefox add-ons.
Had to go to Firefox tools-->Add-ons-->then either Updates or Extensions tab...I can't remember...but in one of those it's listed as "searchbar". I had to uninstall that and now it's fine. (I was looking in the actual extensions folder the first time I tried.)
I could see my mail pop in but then the bing "searchbar" was overlapping the contents of my emails instead of staying in the toolbar. I just got rid of the whole thing.
If I want to use it I'll just go to bing.com. What a pain.
Thanks for your help.