Looking at ubiquity, grub-installer in both jaunty and karmic is supposed to unconditionally add the update-grub hooks to /etc/kernel-img.conf if not already present. So the absence of these hooks from the livefs kernel-img.conf doesn't (presently) worry me.
Looking at ubiquity, grub-installer in both jaunty and karmic is supposed to unconditionally add the update-grub hooks to /etc/kernel- img.conf if not already present. So the absence of these hooks from the livefs kernel-img.conf doesn't (presently) worry me.