ubi-partman failed with exit code 141

[GreatDanton]

I tried to install latest image of Ubuntu 12.10. I got this message (take a look at the image).

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.11.25
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic i686
ApportVersion: 2.5.1-0ubuntu4
Architecture: i386
CasperVersion: 1.321
Date: Fri Aug 31 15:20:05 2012
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120831)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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