Running jessie-sysv with dzz repacks of cups, policykit-1, libpulse0 and dbus. Tried to start gparted from the menu, and it wouldn't start. Then the desktop became unresponsive. First time, I could ctrl-alt-F2 to console. Second time that did not work, nor did magic-sysrq-k kill the desktop. reisub did reboot it. If I start gparted from a root terminal or from within refracta2usb, it works fine. If I start gparted-pkexec from user terminal, it asks for root password and works correctly.
Is it a problem with polkit, or is there something missing that provides the graphical frontend to take the password?