How to restore Status bar in Firefox 4?
Solution 1:
Perhaps you should have a look here:
http://maketecheasier.com/restore-status-bar-in-firefox-4/2010/11/25
Two approaches (involving extensions) are listed there.
Being a Firefox 4 Beta 7 user myself, your question inspired me to try the first option listed there, Link Target Display, which takes the same approach as Google Chrome does. I'm quite happy with it.
Edit: After trying both extensions for a while, I decided I actually like Status-4-Evar better.