I’ve upgraded to Ubuntu 11.10 but I have a problem with shutdown. When I turn off my PC it do the logout instead the shutdwon. When arrive to violet screen (login) than I can shutdown my Pc and all is ok.
When this happens to me it is because I have logged into another virtual terminal on the computer and not logged out there. I've always assumed that Ubuntu was stopping me from aborting what that "other" user was doing in their session.
When I ask for a shutdown from the last remaining session it does shutdown for me.
Sometimes I'll just type
sudo shutdown -h now and not worry about it. Ubuntu will shutdown right away no matter what.