Lubuntu is an Ubuntu variant using the LXDE desktop. It's designed to be a lightweight and easy-to-use desktop environment. Lubuntu is actually not part of the Ubuntu family, and not build with the current Ubuntu architecture. This release is considered as a 'stable beta', a result that could be a final and stable release if it were included in the Ubuntu family. Lubuntu 10.04 is not a LTS version. It is based on the lightweight LXDE desktop environment ans it has PCManFM 0.9.5, the rewrite of PCManFM using GIO/GVFS; LXDE, a new and lightweight GTK+ display manager, Chromium, the open-source edition of Google Chrome based on Ubuntu 10.04 etc....

About Lubuntu

Lubuntu is a faster, more lightweight and energy saving variant of Ubuntu using LXDE, the Lightweight X11 Desktop Environment. The objective of the lubuntu project is to create a faster, more lightweight and energy saving variant of Ubuntu by using LXDE, The Lightweight X11 Desktop Environment, as its default GUI. The ultimate goal of the lubuntu project is to earn official endorsement from Canonical. Members of the lubuntu team take care of LXDE and other packages that are part of the lubuntu installation.