Ubuntu

You may be interested in:

• Ubuntu Lucid on OLPC XO
• Ubuntu On OLPC XO
• the Ubuntu page on the Sugar Labs wiki, explains how to install Sugar on an already installed Ubuntu system, or how to install the Ubuntu Sugar Remix, which is a derivative of Ubuntu.

Older stuff:

• Customizing Ubuntu for XO
• Installing Ubuntu using Compressed Files
• Ubuntu Intrepid for the XO