Quote Originally Posted by khatkarrohit View Post

So , here is my conclusion:
Ubuntu has different security and authentication model from Debian and it is not possible to get back to Debian way in Ubuntu.
The root terminal
Code:
 gksu /usr/bin/x-terminal-emulator
is of no use and all the administrative work can be done by using
Code:
sudo
or 
sudo su
in normal terminal.
that is why sudo exists.

and Ubuntu is not debian

Peace