Comment 2 for bug 12115

just checked again with 1.1.90, still the same issue,
there is no way to keep the configuration without the auto stanca

launch network-admin, configure device, close network-admin -
/etc/network/interfaces will contain something like:
iface eth0 inet static
address 192.168.0.2
netmask 255.255.255.0
gateway 192.168.0.1

auto eth0

now you launch network-amdin again, deselect Properties/This device is
configured, close network-admin -
/etc/network/interfaces will not contain any information about eth0

imho it should just remove "auto eth0". or this should be trigert by
Activate/Deactivate