This is quite annoying. I was not even in the edit toolbar menu, just normal browsing. I clicked on the status bar and now it is completely missing, restarted FF and still missing. Firefox version: 14.0.1
Do you mean the add-on bar (View menu / Toolbars / Add-on Bar, or just press Ctrl+/ to toggle)? Firefox hasn't has a status bar for quite some time now, so if you want it back you'll probably need to use https://addons.mozilla.org/en-US/firefox/addon/status-4-evar/ or similar.
If you are using Firefox 3.x, and by clicking around the status bar got misplaced and maybe the other toolbars as well (e.g. the Menu bar, Navigation toolbar, Bookmark toolbar, etc.), here's a quick fix:
- Press Alt
- Click the View menu then Toolbars
- Make the appropriate selections to activate any missing toolbars