Firefox is using a toolbar space to tell me it's not able to show the toolbar, please re-install Firefox toolbar. But in the view/toolbars menu, there is no option to turn on/off that Firefox toolbar. I don't want it, if possible.
I get other more minor problems with other tollbars, they get restored when I don't want them (AVG,Zonealarm,etc.) but at least I can toggle those off.
The information that was submitted with your posting indicates you are using a 4 year old version of Firefox -1 5.0.6 - if that is the case you should update Firefox.
If you think that information is wrong, that you are running a newer version, see this: