cannot SU in debian etch

[khaleel5000]

Concerned distro :- Debian Etch (obviously)
Number of times Successfully Installed [Debian etch] by me =6
2 times with Base System and DESKTOP Environment
4 times with just Base system
Additional Info :- Have slow Dialup , Method of installation is :- DVD , Have Debian etch 3 dvd set, I am the only user of this PC , I have the user and root passwds.
Problem :- ONLY with BASE SYSTEM installs
Whats the problem? :-
I cannot su (only in the distros that I have installed base sytem and then MYSELF installed kde via the etch dvd ). [i am 100% positive the password and keymap etc are all correct ]
say I am logged in as non-root user khaleel , typeed su , hit enter , typed correct root passwd , it says Authentication Failure , SORRY !
say non root member with login name is khaleel
as root I ran KDE , in KDE User Manager khaleel is member of
audio
Cdrom
Dialup
Dip
Games
Irc
Ip (or is it LP?)
man
src
ssh
sudo
video
www-data
-----JUST LIKE in the Base system + Desktop environment install (but there I can successfully SU )
here it says Authentication failure , Sorry !

[bigtomrodney]

Have you tried making yourself a member of the wheel group? Also post the output of /etc/sudoers

[khaleel5000]

Hey thanks for the reply (believe me i have been searching /asking at irc for like AGEs for soem one to dig about it )
I am a little bit newbie in cli , however as root i viewed KUserManager and there is NO wheel group ( please attach a how to create a wheel group , I did google about HOW TO CREATE wheel group , but didnot find any relevant.....please )
and my /etc/sudoers , I have edited the last two lines i.e. ALL ALL... and khaleel ALL...by readint net-howtos.........still no success though


# /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the man page for details on how to write a sudoers file.
#

Defaults env_reset

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root ALL=(ALL) ALL
ALL ALL=/dialup,/hangup,/pon,/plog,/poff
khaleel ALL=(root) ALL



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