We should prompt the user as part of the Ubiquity installer and ask him/her whether they wish to enable automatic security updates or not.
Currently, Ubuntu, and Linux in general, have few real viruses in the wild.
This will change with time, as all systems, no matter how well designed, cannot be made perfect.
When problems are found and fixed in Ubuntu's security, they are signed and released into the repositories.
Currently, the default is to not update automatically. This makes sense, as we shouldn't do such things without a user's permission. However, many users are not aware of security updates, and do not know that the update process can be automated, as the option is hidden away in Sys>Admin>SoftwareSources.
Prompting would allow the user to better protect himself, and the user would be able to choose from
* No automatic
* Download and notify
* Download and install
The system will not reboot without the users permission, no matter what the user chooses.
Non-security updates should _never_ be automated, and should require user intervention (this is the current behavior).
