My Firefox 3 bookmarks toolbar disappeared suddenly. It vanished from my browser window, and when I tried to bring in back by right-clicking on the toolbars' area and re-checking the "bookmark toolbar ...
This worked for me:
Right click in toolbar area
Make sure that boomarks toolbar is selected
Drag bookmarks icon to empty boomarks toolbar
actually i did that and it brought up the icon.. however when i clicked menu bar it brought my bar back up .. thank you :) back in business