LL update error

[DeepThought]

Before we carry on with a cycle of "sudo apt-get install -f" and other commands which don't seem to be working, that we clear the decks first......

From the outputs posted by @pkmaarson the python and samba installs have become corrupted somehow and repeating the above command is not going to solve this.
python-crypto, python-samba, samba-common-bin, samba, python-apt  seem to be giving the problem, so why not purge them first, and hopefully have a clean slate.
I suggest the following:

Code:

sudo apt-get purge samba*
sudo apt-get purge python*
sudo apt-get autoremove
sudo apt-get clean

I would then reboot and then try an update

Code:

sudo apt-get update
sudo apt-get upgrade

If the upgrade goes ok, then try and reinstall python and samba and any other modules that your programs might need.