Firefox 4 beta has been released recently with some great new features, We have already shared some tips on firefox 4 beta. The new firefox 4 beta interface has got the new file menu toolbar as shown in the image below.
Now, we will tell you how to revert back to the old classic style file menu toolbar in firefox 4 beta, follow the procedure below for the same
Click the Firefox down arrow to expand it and then under customize sub menu check Menu bar as shown in the image below.
Once you click this option, you will see the old classic style menu bar back in new firefox 4 beta as shown in the image below.