I got the same issue and solved it just removing the duplicated bookmarks. Then adding again the bookmarks deleted by me and the bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/590707 Title: Bookmark toolbar gets moving crazy on Firefox startup -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
