I've been bitten by this. There's already a bug report:
https://bugs.launchpad.net/ubuntu/+s...2/+bug/1223959
More specifically in my case it was the update to grub-pc. I don't actually have grub2 installed. It seems to be a meta-package. I haven't needed it anyway.
Code:
paul@lubuntu-64:~$ aptitude show grub2
Package: grub2
New: yes
State: not installed
Multi-Arch: foreign
Version: 2.00-18ubuntu2
Priority: extra
Section: universe/admin
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Architecture: amd64
Uncompressed Size: 32.8 k
Depends: grub-pc (= 2.00-18ubuntu2), grub-common
Conflicts: grub2
Provides: grub2
Provided by: grub2
Description: GRand Unified Bootloader, version 2 (dummy package)
This is a dummy transitional package to handle GRUB 2 upgrades. It can be safely removed.
Homepage: http://www.gnu.org/software/grub/
paul@lubuntu-64:~$
