[Virtual-pkg-base-maintainers] Bug#609939: base: squeeze beta2 amd64 install fail in Acer3820: grub can't be installed

[root]

Package: base
Severity: important



-- System Information:
Debian Release: 5.0.7
  APT prefers proposed-updates
  APT policy: (500, 'proposed-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/bash

Hello,
squeeze beta2 amd64 install fail.
my computer is Acer3820tg.
the last stage of installing grub, error occors
so the system boot up into a grub safemode with command line while I restart it after fininshing the install.