ubuntu 12.10 is setuid to root error

if you loose access to sudo and you don't have the root acount enabled to correct it
do the following easy steps

restart with a live cd in the disk tray and make sure the bios is set to boot from the cd (you can ofcourse but from usb and other ways too but that's not the point here)

if the live cd is xubuntu mounting the disk is just right click on the drive and hit
mount

navigate to /usr/bin/ through terminal

and when you are in execute

sudo chown root:root sudo

sudo chmod 4711 sudo

and you are done



restart and put boot options in bios back to normal