UPDATE 2014-06-29: Unfortunately, when I updated the comment system to use Google+, it cleared out the old comments, which happened to be somewhat helpful.
I have just tried, and failed, to get full-disk encryption on Linux Mint 14 (see also this Ars Technica review). I'm writing this post in the hopes that someone can figure out how to get it to work.
As part of my university's ongoing efforts to improve data security, we have just been required to encrypt the drives on our work-issued laptops.
Ubuntu 12.10 Quantal Quetzal introduced the full-disk encryption option into their default installer. Previously, it was only available via the text-mode installer available on a separate "alternate" image. However, despite using Quantal for several months, I find the Unity GUI really annoying, and decided to try Linux Mint 14 with the Cinnamon desktop GUI. The Cinnamon GUI is a GNOME 3 fork, so it uses 3D compositing, but presents a GNOME 2-like interface (or Windows-like), which I prefer.
Unfortunately, Linux Mint 14 did not adopt Quantal's Ubiquity installer, so the full-disk encryption option was not available. Andreas Haerter has written a good guide to full-disk encryption on Ubuntu prior to 12.10, and included a shell script which automates a lot of the process. I made some small modifications to the script for Mint: renaming LVM volume names, using optimal alignment in parted. However, Ubiquity now crashes after I specify the mount points and it starts doing the install proper.
Maybe someone out there has an idea of what might be broken?
My modified script is here: