Having recently read about Jekyll I decided to boot up Ubuntu, install all the bits and pieces and give it a try. However, I fell at the first hurdle when greeted by the following error:
Error installing gemcutter:
gemcutter requires RubyGems version >= 1.3.5
The Synaptic Package Manager reported everything as being up-to-date but only to version 1.3.1. As it turns out, there is another way to update rubygems on Ubuntu, which worked a treat! The rest of the installation was a breeze 
If you are interested more info on Jekyll can be found on GitHub.