Network Manager: Errore Failed to add new connection: (32) Insufficient privileges.

Creare il file:

/etc/polkit-1/localauthority/50-local.d/org.freedesktop.NetworkManager.pkla

e inserirvi il testo seguente:

[nm-applet]Identity=unix-group:netdevAction=org.freedesktop.NetworkManager.*ResultAny=yesResultInactive=noResultActive=yes