Crash during installation from Live Install

[Hélio Guilherme]

When reaching the language packs installation the installer crashes. I have selected Portugal, Portuguese.
It appears that the filesystem on the target gets damaged at this point.
My system does not have HDD or SSD, only using two USB memories and a SD card for /home.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.8.7
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CasperVersion: 1.287
Date: Mon Feb 20 01:08:59 2012
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=pt_PT.UTF-8
 PATH=(custom, no user)
 LANG=pt_PT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Feb 20 01:08:06 ubuntu plugininstall.py: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (2)
Feb 20 01:08:06 ubuntu plugininstall.py:

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your log files attached to this bug report it seems that there is a problem with the disk to which you are trying to install Ubuntu. I'd recommend performing a back up of your existing operating system and then investigating the situation. Measures you might take include checking cable connections for your disks and using software tools to investigate the health of your hardware. In the event that is is not in fact an error with your hardware please set the bug's status back to New. Thanks and good luck!