Desktop Linux Reviews: "Lubuntu 10.04 is not an official derivative of Ubuntu; it is not supported by Canonical. However, it is serves a very important purpose by providing an Ubuntu distro geared toward older or less powerful computers."
Julien Lavergne has released Lubuntu 10.04, an Ubuntu-based distribution featuring the lightweight LXDE desktop: "Lubuntu 10.04 is now available for download. Lubuntu is an Ubuntu variant using the LXDE desktop. It's designed to be a lightweight and easy-to-use desktop environment.