I updated Firefox and my navigation toolbar is missing. I've followed all of the instructions and nothing seems to be working. I'm a patient, but low-tech person, and I've already spent a couple of hours on this.
I've gone through all of the instructions for "Back and Forward or Other Toolbar items are missing".
I've gone through "troubleshooting extensions and themes".
I was concerned that the Yahoo toolbar was the problem, but I've removed that from Mozilla and from my program files.