custom job to be prioritised against system jobs

[Luigi Capriotti]

I have been trying to have a custom job to complete before ubiquity or 
lightdm start (on oneiric).

My custom job is something like:

start on starting lightdm or starting ubiquity
task

script
	# blablabla

end script

but at runtime I can see that ubiquity runs while my job is still 
running as well.

This is the related part of the syslog:

Mar  7 10:44:15 live kernel: [   23.473927] init: ubiquity state changed 
from starting to pre-start
Mar  7 10:44:15 live kernel: [   23.475448] init: ubiquity state changed 
from pre-start to spawned
Mar  7 10:44:15 live kernel: [   23.478175] init: ubiquity main process 
(2780)
Mar  7 10:44:15 live kernel: [   23.478248] init: ubiquity state changed 
from spawned to post-start
Mar  7 10:44:15 live kernel: [   23.478702] init: ubiquity state changed 
from post-start to running
Mar  7 10:44:15 live kernel: [   23.479057] init: event_new: Pending 
started event
Mar  7 10:44:15 live kernel: [   23.479096] init: Handling starting event
Mar  7 10:44:15 live kernel: [   23.479320] init: event_finished: 
Finished starting event
Mar  7 10:44:15 live kernel: [   23.479350] init: mycustomjob state 
changed from starting to pre-start
Mar  7 10:44:15 live kernel: [   23.481129] init: mycustomjob state 
changed from pre-start to spawned
Mar  7 10:44:15 live kernel: [   23.483850] init: mycustomjob main 
process (2782)
Mar  7 10:44:15 live kernel: [   23.483897] init: mycustomjob state 
changed from spawned to post-start
Mar  7 10:44:15 live kernel: [   23.484507] init: mycustomjob state 
changed from post-start to running


Thanks in advance for any help.

Luigi