This is about the gnome-panel, not the gnome-main-menu. The gnome-main-
menu package contains the menu developed by Novell for SUSE
(http://www.novell.com/communities/files/u7814/menu_default.png); and
not the menu you are talking about.
** Package changed: gnome-main-menu (Ubuntu) = gnome-panel
*** This bug is a duplicate of bug 548652 ***
https://bugs.launchpad.net/bugs/548652
Thank you for your bug report. This bug has already been reported, but
please feel free to report any other bugs you find.
** Package changed: gnome-panel (Ubuntu) = gtk+2.0 (Ubuntu)
** Changed in: gtk+2.0