Cryptocat lets you instantly set up private conversations with some limitations. It's an open source encrypted alternative to other services. Messages are encrypted inside your own browser using AES-256. Encrypted data is securely wiped after one hour of inactivity.
This is a brief walk-through of installing Ubuntu Hardy Heron (I used the release candidate, see the previous post) with a LUKS encrypted LVM partition, and preparing it for snapshot backup (explained below). You will need the “alternate†installer for this (ie. not the “desktop†Live CD).
