This page describes the logo font used by Ubuntu from 2004‒2010. For 2010 onwards, see the Ubuntu Font Family.
Andy Fitzsimon of the ArtTeam has created the official Ubuntu Title Typeface.
Ubuntu-Title is licensed under LGPL.
It is packaged and available in Ubuntu 5.04 (Hoary Hedgehog) as the ttf-ubuntu-title package in the universe component.
You may also download the font directly from the designer's website.
Where it should be used
with a derived logo such as edubuntu or kubuntu it is recommended that this font be used. Changes to kerning are permitted however kerning reductions are advised against.
This is a title font and therefore not to be used in body text. Use it for topic headings in ubuntu-related printed documents or in digital documents where fonts can be embedded or subset such as PDFs.
Extending This Font
http://nitrofurano.linuxkafe.com/linux/UbuntuTitle_0706252006.zip (1021kb) - 7 different weights for UbuntuTitle (from skinny to bold), in ttf, otf and svg font formats - some fixes and intensive testing are needed, but very probably useful for Ubuntu related graphisms
more to be added soon