Comment 2 for bug 582376

Raffaele: this is not an upstart project issue, that's why Scott marked it as Invalid. That would rather be a bug in the samba upstart script (samba package), if any.

The nmbd upstart script has "start on (local-filesystems and net-device-up IFACE!=lo)" so it should be started when another interface goes up. Could you confirm that nmbd doesn't start automatically once you log in and wlan0 goes up ?