Comment 6 for bug 972221

Setting up libgvc5 (2.26.3-10ubuntu1) ...
Setting up libgvpr1 (2.26.3-10ubuntu1) ...
Setting up graphviz (2.26.3-10ubuntu1) ...
Setting up grub-common (1.99-20ubuntu1) ...
Setting up grub2-common (1.99-20ubuntu1) ...
Setting up grub-pc-bin (1.99-20ubuntu1) ...
Setting up grub-pc (1.99-20ubuntu1) ...
Installation finished. No error reported.
/usr/sbin/grub-setup: warn: Attempting to install GRUB to a partition-less disk or to a partition. This is a BAD idea..
/usr/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
/usr/sbin/grub-setup: error: non-sector-aligned data is found in the core file.
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.2.0-21-generic
Found linux image: /boot/vmlinuz-3.2.0-20-generic
Found initrd image: /boot/initrd.img-3.2.0-20-generic
Found linux image: /boot/vmlinuz-3.2.0-19-generic

I got the above when updating today along with a screen warning me it had failed to update grub. Will reboot later and hopefully confirm it still boots.