"do-release-upgrade -s -d" failed

[discont]

$ do-release-upgrade -s -d
Checking for a new ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1379 kB]
Fetched 1379 kB in 6s (45.5 kB/s)
authenticate 'precise.tar.gz' against 'precise.tar.gz.gpg'
extracting 'precise.tar.gz'
[sudo] password for anton:

Reading cache

Checking package manager

Sandbox setup failed

It was not possible to create the sandbox environment.

Preparing the upgrade failed

Preparing the system for the upgrade failed so a bug reporting
process is being started.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: update-manager 1:0.152.25.8
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic-pae 3.0.22
Uname: Linux 3.0.0-17-generic-pae i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CheckboxSubmission: 32b2b5d4dec078676ee5a1a9cbe277bc
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Thu Mar 22 15:15:42 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.