For the average business or personal computer user, Ubuntu is one of the easy to use free Linux operating systems which makes for a much more stable and pleasant user experience than the infamous Microsoft Windows. It thus comes as a surprise, to have a headache with an Ubuntu upgrade. More here

Having just spent days restoring data due to the impossibility of migrating back the entire Operating System from Ubuntu 9.10 to 9.04, seemingly because the Master Boot Record contains changes in this latest version as well as the home folder encryption system maybe forwards but not easily backwards compatible, I thought it best to write about the experience and save others the headache.