How do I make the PolicyKit authentication agent window not dissapear when I enter faulty password in Gnome-Shell Ubuntu 12.04?

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http://askubuntu.com – In Unity, whenever authentication is required and when the PolicyKit authentication agent window is presented, it stays there even after I would enter a faulty password. But under Gnome Shell, whenever I make a mistake, the window is closed immediately. I find this behaviour irritating. For instance I use Synaptic rather frequently, and I prefer to start it using Synapse. I press Ctrl+Space to invoke Synapse, then I enter "syn" (s-shows SMplayer, sy- shows System Monitor) and than I press Enter so that Synaptic is invoked. Then I'm presented with the PolicyKit authentication agent window. As (HowTos)