Description of problem: I was at a conference trying to install a new package someone told me I should try. I downloaded the package and opened it; PolicyKit prompted me for my root password. Although I have sudo I could not remember my root password. Then, it was time for a session to start. I made 5 or 6 attempts at my password before I gave up. I left the password prompt dialog up as I assumed the screensaver would pop up in 30 seconds or so since that is how I set it. Come back to my laptop 3 hours later, and there is no screensaver. It's a little worrisome to have your unattended laptop completely unlocked sitting in a room at a conference :) This is a security problem. My mistake for not explicitly locking the screen, but at the same I don't think it is an unreasonable expectation to expect the screensaver to eventually come up. I think probably policy kit took a keyboard grab so that the dialog doesn't pop under other windows and inexplicably lock keyboard input elsewhere. This makes sense. However it does not make sense to wait on someone to enter a password for three hours; at least, I cannot think of any scenario in which this would make sense. My suggestion would be for the keyboard grab that PolicyKit takes to time out after some reasonable interval - 1 minute seems sane but even better would be to get this time interval value from the gnome screensaver time setting.
PolicyKit-0.8-2.fc9.i386 PolicyKit-gnome-0.8-4.fc9.i386
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