I recently heard about Kiosk type Session for Ubuntu 11.10, How do i Use/Install it? What actually is it?
Kiosk mode stands for a machine with very restricted acting ability. Often it is used to allow quick internet access for user of the machine, but not much more.
Here is an instruction for Setting up a Ubuntu 10.04 Internet Kiosk.
Another possibility would be to use Gofris to reset the system settings after every reboot.
That appears to be GNOME (and Booting in kiosk mode appears to reference KDE).
Got anything for Unity? Wasn't 11.10 (which the asker specified) Unity?