Disable sudo

[Christoph Georgi]

Hi,

Although I can disable my default user to be able to sudo by commenting 
the line out in the sudoers. However, if I do so, I cannot open the 
synaptic pagacke manager anymore (using the Gnome menu): it doesn't 
accept my user password and my root password! The only possibility left 
is to log in as root in the terminal and then start synaptic via the 
terminal.

Is there any workaround for this problem?

Christoph