The only case in which sulogin will be spawned this way in the default configuration is if the mountall job exits abnormally, triggering /etc/init/mountall-shell.conf. Do you have anything in /var/log/upstart/mountall.log that would explain such a failure?
The only case in which sulogin will be spawned this way in the default configuration is if the mountall job exits abnormally, triggering /etc/init/ mountall- shell.conf. Do you have anything in /var/log/ upstart/ mountall. log that would explain such a failure?