Xubuntu

Xubuntu is an elegant and easy-to-use operating system. Xubuntu comes with Xfce, which is a stable, light and configurable desktop environment.
Xubuntu is perfect for those who want the most out of their desktops, laptops and netbooks with a modern look and enough features for efficient, daily usage.

It works well on older hardware too.
The graphical installer enables you to get up and running quickly and easily. A standard installation should take less than 25 minutes.
Once installed your system is immediately ready-to-use. We provide you with a desktop offering that includes a full set of productivity, internet, drawing and graphics applications, and games.