Disable sudo for 'user'

[Sven Schneider]

Hi,


I'd like to modify my Debian Live CD so that the user "user" may not use
sudo. (Of course, I've already set a password for root). I tried to set 
the kernel boot option "nosudo" but unfortunately, the standard user is 
still added to /etc/sudoers.

How do I change this? Is it possible at all, or does 
casper/live-initramfs need sudo for some reason?


I'm using Etch (including debootstrap), live-helper is from Lenny.


Regards,
Sven