As you know that Mozilla has released the Ist beta version of upcoming Firfox 4.0,The UI of this beta version is totaly different.
Mozilla has added a FEEDBACK button on the toolbar of it,It capture some space on the toolbar and you will use rarely so why it is there?
To remove it do this:-
- Right click on toolbar and select customize,
- Now drag and drop the FEEDBACK button in the customize window
- Now click on DONE,
- That’s it