How do I permanently disable 'elevated privileges'?

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http://askubuntu.com – I am using Lucid Lynx 10.04, and am having difficulty setting the sudo timeout to 0 minutes, or instant, as in, essentially, disabling the 'elevated privileges' feature. I have tried editing /etc/sudoers and changing the timeout variable there to no avail. No matter what it is set to, the key icon with the 'Drop All Elevated Privileges' always pops up and stays up indefinitely until I kill it, and even then I have to kill it by choosing the 'Drop All Elevated Privileges' option from the menu because 'sudo -k' or 'sudo -K' commands have no effect. Why is this, and how do I gain total control (HowTos)