I notice that the second time I launch the Root Terminal from XFCE, it
skips asking for a password and shows the following warning:

    Granted permissions without asking for password

    The '/usr/bin/x-terminal-emulator' program was started
    with the privileges of the root user without the need
    to ask for a password, due to your system's
    authentication mechanism setup.

    It is possible that you are being allowed to run
    specific programs as user root without the need for a
    password, or that the password is cached.

    This is not a problem report; it's simply a
    notification to make sure you are aware of this.

I haven't seen this before. What should I change to have XFCE require a
password each time I launch the Root Terminal icon.

Regards,
Lars