grub fails to install neatly on raid0 with 2 solid state drives

[Jordi Serra Sosa]

i have to make a special partition for Grub2 because it fails to install neatly on raid0 with 2 solid state drives, would be awesome of you guys to fix it.

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 x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CasperVersion: 1.287
Date: Sun Nov 6 04:12:33 2011
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=es_MX.UTF-8
 PATH=(custom, no user)
 LANG=es_MX.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Nov 6 04:12:25 ubuntu plugininstall.py: Traceback (most recent call last):
Nov 6 04:12:25 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1641, in <module>
Nov 6 04:12:25 ubuntu plugininstall.py: install.run()
Nov 6 04:12:25 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 55, in wrapper
Nov 6 04:12:25 ubuntu plugininstall.py: func(self)
Nov 6 04:12:25 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 199, in run
Nov 6 04:12:25 ubuntu plugininstall.py: self.configure_bootloader()
Nov 6 04:12:25 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 955, in configure_bootloader
Nov 6 04:12:25 ubuntu plugininstall.py: "GrubInstaller failed with code %d" % ret)
Nov 6 04:12:25 ubuntu plugininstall.py: InstallStepError: GrubInstaller failed with code 1
Nov 6 04:12:25 ubuntu plugininstall.py: