On Sat, Oct 09, 2010 at 08:23:51PM +0100, Jenny Hopkins wrote:
Typing 'sudo su' is akin to saying 'Let me switch to being root - look,I have root privilege to allow me to do this'. Because executing a command using sudo allows you to execute a command without having to log in as root, you won't need to do this.
If you want a root shell and have sudo then you can use sudo -i to get your root shell.
Adam