I suddenly lost my Bookmarks Toolbar and all the bookmarks (485 bookmarks). I actually fixed the problem but wanted to share what happened. I did notice that my bookmarks were still on my iPhone and I was trying to be careful and not get them to sync with the desktop. I tried restoring the bookmarks per the Support guidance and it would give an error when trying to restore them. I could probably repeat this if Tech Support is interesting in working with me to repeat the problem. Today I found out what happened. In Norton 360 I had blocked Firefox from using the microphone and webcam. That's it! That caused the bookmarks toolbar to be empty and also I could not save a new bookmark. I tried to find a setting somewhere in Norton that I might have changed a couple days ago because the problem started after I had made some changes although I had no idea what I did in Norton to cause that problem. Today I was looking in settings or somewhere in Firefox and a window popped up saying I had the webcam and microphone disabled for Firefox. Is that ok? So I turned it off and the Bookmarks Toolbar magically showed up. This makes NO logical sense at all that this setting caused the toolbars not to display or not to be able to add new bookmarks. Thanks.