When I click on the "Restart..." or "Shut Down..." options of the Gnome panel, a box dialog appears in order to confirm whether I really want to "Accept" or "Cancel" the process (as expected).
However, when I press "Cancel" (or even if I simply press the "x" button to close the dialog), the process continues as if I had pressed "Accept."
I have Ubuntu 14.04, and Gnome 3.10.4.
Any suggestions? Thanks!