like #5, but when the "restart-indicator" is clicked it folds down to a list, the top entry saying
"some of your applications received important updates, but need to be restarted before these can take effect".
after that a list of applications in question and a "restart all" item follow.
if the user clicks on one of the apps it is restartet and disappears from the list.
if an app was manually restartet (by the user) it also disappears from the list.
if there are no more apps left the restart-indicator should close by itself.
sometimes system components receive updates which will only take effect after a full reboot. this can be incorporated by adding an item to the very bottom that says "In fact there are some udpates which require to restart the entire operating system. Restart now! "