I'm using Red Hat Enterprise Linux 6.4, and the menubar has disappeared, as you can see from this screenshot. I'm not sure which setting I modified.
I've removed .gnome config from my home directory, and also reinstalled gnome* , but, the menubar is still missing.
Has anyone had this problem before? And how can I fix it?
I found the answer by myself. Due to I install globalmenu but I haven't globalmenu applet on my panel. So, It looks like disappear. After remove globalmenu, the menubar back to top of application.