Ubuntu 11.10 no puede instalar Grub

[Juan Carlos Barrera Mora]

Ubuntu 11.10 y discos en RAID 0 (Mala combinacion, pero sigo intentandolo)

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: Fri Apr 6 20:39:05 2012
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=es_ES.UTF-8
 PATH=(custom, no user)
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Juan Carlos Barrera Mora (unicejos)]

La controladora RAID es de VIA

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Apr 6 20:38:47 ubuntu plugininstall.py: Traceback (most recent call last):
Apr 6 20:38:47 ubuntu plugininstall.py: File "/usr/lib/ubiquity/ubiquity/install_misc.py", line 281, in pulse
Apr 6 20:38:47 ubuntu plugininstall.py: self.db.subst(self.info, 'TIME', time_str)
Apr 6 20:38:47 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 60, in <lambda>
Apr 6 20:38:47 ubuntu plugininstall.py: lambda *args, **kw: self.command(command, *args, **kw))
Apr 6 20:38:47 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 81, in command
Apr 6 20:38:47 ubuntu plugininstall.py: status = int(status)
Apr 6 20:38:47 ubuntu plugininstall.py: ValueError: invalid literal for int() with base 10: ''
Apr 6 20:38:47 ubuntu plugininstall.py: