Yes, it is likely to be your grub setup. If you've changed the setup, then the default /usr/sbin/update-grub script may not work (or your replacement, if you've replaced it).
This may be a duplicate of bug 94718. -- update-manager 6.10 edgy -> 7.04 feisty https://launchpad.net/bugs/95910 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
