One other thing, just following up a hunch: on a broken system, could you find the process ID of console-kit-daemon ('ps acx | grep console-kit'), then attach the output of 'lsof -p THAT_PROCESS_ID' run as root?
One other thing, just following up a hunch: on a broken system, could you find the process ID of console-kit-daemon ('ps acx | grep console-kit'), then attach the output of 'lsof -p THAT_PROCESS_ID' run as root?