Upgrade 10.04 -> 10.10 puts wrong UUID in /boot/grub/menu.lst in certain circumstances

Binary package hint: update-manager

I have a drive with more than one bootable linux install on it.

dcampbel@vostro-local:~$ blkid /dev/sdb6
/dev/sdb6: UUID="99de712e-1775-4e49-ae54-5eadbe685a1c" SEC_TYPE="ext2" TYPE="ext3"

dcampbel@vostro-local:~$ blkid /dev/sdb9
/dev/sdb9: UUID="de3674a2-2543-4e51-95ea-70f61cbad1ba" TYPE="ext3"

Grub reads its config from sdb6, but the config in the partition with UUID 99de712e-1775-4e49-ae54-5eadbe685a1c but allows me to boot into the partition with UUID de3674a2-2543-4e51-95ea-70f61cbad1ba as well.

I was booted into the partition with UUID de3674a2-2543-4e51-95ea-70f61cbad1ba and proceeded to upgrade from 10.04 to 10.10. It succeeded but having upgraded, I found that /boot/grub/menu.lst had the wrong UUID, the UUID of the other partition.

title Ubuntu 10.10, kernel 2.6.35-22-generic
uuid 99de712e-1775-4e49-ae54-5eadbe685a1c
kernel /boot/vmlinuz-2.6.35-22-generic root=UUID=99de712e-1775-4e49-ae54-5eadbe685a1c ro quiet splash
initrd /boot/initrd.img-2.6.35-22-generic
quiet

Somehow the updater determined the wrong UUID. That partition was not even mounted at the time of the update.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: update-manager 1:0.142.20
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Mon Nov 1 09:59:08 2010
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager