After install the ubuntu 6.10 from the live-cd, you may find that the SCIM does not work. All the related package has been installed, but after press Ctrl+Space, the SCIM input has not enabled.
The main reason is that the scim daemo is not running.  Following is the solution:
create 75scim file under /etc/X11/Xsession.d/ with following lines [...]