My bookmarks don't appear in bookmark toolbar, but they saves (as Incredible Bookmarks add-on says) , but if i delete any of bookmark, it dissapears from bookmark toolbar and seems to be deleted from my system. I tried creating new profile, reinstalling FF, and it seems that the only way to save my bookmarks is to make a backup everytime i add new bookmark and restore bookmarks everytime i launch FF. I've even tried to remove Bookmarks.html and .sqlite files, but it didn't helped either...