Running a 32bits on debian amd64 system

[Mathieu Malaterre <mathieu.malaterre@gmail.com>]

'lo

  I am reading:

http://alioth.debian.org/docman/view.php/30192/21/debian-amd64-howto.html#id292205

  But everytime I chroot into my 32bits system, part of my system
still sees me as my user:

$ sudo chroot ./Debian32Chroot
# id
uid=0(root) gid=0(root) groups=0(root)
# echo $HOME
/home/mathieu

What should I do so that I either:

1. Completely be root
or
2. Completely be user 'mathieu'

Thanks,
-- 
Mathieu