VPN tab is visible for me, but I am not able to save password in system-wide pptp connection, field remains blank.
NM does not ask for password when connecting, and there is an error in syslog:
nm_vpn_connection_connect_cb(): VPN connection 'VPN1' failed to connect: 'No VPN secrets!'
user-level connection works fine.
NM version: 0.8~a~git.20091008t231804.c31b3e4-0ubuntu1~nmt1