OK, that's what I expected before I confused programs.
Could you post here your /etc/xdg/autostart/polkit-gnome-authentication-agent-1.desktop file? Please also check that you don't have a file ~/.config/autostart/polkit-gnome-authentication-agent-1.desktop. If so, then please attach it here - removing it should solve the issue.
OK, that's what I expected before I confused programs.
Could you post here your /etc/xdg/ autostart/ polkit- gnome-authentic ation-agent- 1.desktop file? Please also check that you don't have a file ~/.config/ autostart/ polkit- gnome-authentic ation-agent- 1.desktop. If so, then please attach it here - removing it should solve the issue.