It sounds like you want to control a policy of when things should update. For example Firefox every 4am, Kernel when you say so, Python 2.6 never, etc. I unders

It sounds like you want to control a policy of when things should update. For example Firefox every 4am, Kernel when you say so, Python 2.6 never, etc. I understand "something should update itself" to mean that the user doesn't get to set the policy, it does.