Apt-get autoremove question

[Gábor Hársfalvi <hgabi84@gmail.com>]

Hi,

When I run the command "apt-get autoremove" it wants to remove 115
packages, for example "network-manager, network-manager-gnome,
software-center, update-manager-core, update-manager-gnome,
update-notifier,
  update-notifier-common".

But I don't want to remove these because I think they are important
system packages. Don't they are?

Why autroremove wants to remove they now?

I was know that autoremove usually helps cleaning my system safely so
I used it a lot before without problem.

Thanks