Je moet alleen wel oppassen als je weer terug wilt naar de oude situatie lees ik hier..
De networkmanager en de gnome network manager zijn inderdaad verwijderd uit synaptic.
. First, reintstall network manager in case you wish to switch back.
sudo apt-get install -d --reinstall network-manager gnome-network-manager
This will download the packages for network manager. If you don't do this, you won't be able to do it after you install wicd, because you may not have the packages available, and maybe you can't get the network working either.
Just in case.