Ubuntu 12.04 Beta 1: package cups 1.5.2-5 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[Kieran Grant]

Just realised that it appears I didn't use the actuall Beta 1 ISO for this machine, looks like I still used the Alpha image, sorry about that. I'll try this again, with the right image.

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Ubuntu 12.04 Beta 1 Installed without downloading and installing updates during install and without installing 3rd party addons in a QEMU with KVM acceleration virtual machine. (AQEMU on Ubuntu 11.10, custom qemu from git (stable1.0 so no "unstable" patches to qemu).

I noticed that with the same QEMU settings the bug did not happen if I downloaded and installed updates during "CDROM" install.
After frist boot I opened Update Manager (as I knew there would be updates for the beta) I got a message saying I needed to do a "Partial Upgrade" first. So I did, CUPS is the only thing that failed to install.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: cups 1.5.2-5
ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2
Uname: Linux 3.2.0-12-generic x86_64
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
CupsErrorLog:

Date: Sun Mar 4 16:47:09 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1)
Lpstat: Error: command ['lpstat', '-v'] failed with exit code -11: p11-kit: duplicate configured module: gnome-keyring-module: /usr/lib/x86_64-linux-gnu/pkcs11/gnome-keyring-pkcs11.so
Lsusb:
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
 Bus 001 Device 003: ID 0409:55aa NEC Corp. Hub
 Bus 001 Device 004: ID 0627:0001 Adomax Technology Co., Ltd
MachineType: Bochs Bochs
Papersize: a4
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-12-generic root=UUID=02953517-1d0d-401e-b6fa-ec5085fa02b5 ro quiet splash vt.handoff=7
SourcePackage: cups
Title: package cups 1.5.2-5 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-03-04 (0 days ago)
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
dmi.product.name: Bochs
dmi.sys.vendor: Bochs