First: I did not see "Authentication agent" listed when I ran gnome- session-properties on my 11.04 server. I did not see it on my Ubuntu 10.04 workstation, either. Not sure what's up with that.
However, you did identify the root of the problem. I did not mention that I am using VNC. When I log in locally (with a physical keyboard and monitor), then I am able to "Click to make changes" and change my hostname. When I log in using a physical keyboard, it looks like this when I run "who" (my username is "ubuntu"): ubuntu tty8 2011-09-11 18:33 (:0) But when I log in with VNC, it looks like this: ubuntu 2011-09-11 18:32 (127.0.0.1:1) I am guessing the difference between (:0) and (127.0.0.1:1) is why my VNC session is not authorized to make changes. So I am marking this bug as "invalid". Thank you for your help. I'm off to read the PolicyKit documentation now... but if you could give me a hint as to where I need to add "127.0.0.1:1" it would be much appreciated :) ** Changed in: gnome-system-tools (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/846808 Title: PolicyKit button doesn't allow authenticating To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-tools/+bug/846808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs