Comment 3 for bug 873358

The most relevant part of this is start: Unknown job: smbd

This means that /etc/init/smbd.conf is missing.

If it has been removed, then try

sudo dpkg -i --force-confmiss /var/cache/apt/archives/samba_2:3.5.11~dfsg-1ubuntu2_i386.deb

That will restore the smbd job from the package.

If that works, this was not a bug but a broken config on the system.