Hewlett Packard has released a custom version of Ubuntu Linux designed for netbooks. For the HP Mini 1000 Mi Edition, to be exact. Under the hood, the operating system is based on Ubuntu 8.04 Hardy Heron. That means it can run pretty much any application that runs on Ubuntu including OpenOffice.org, Firefox, Thunderbird, Sunbird and Pidgin. In fact, it comes preloaded with all of those applications plus a few more. It's also fairly easy to install other Linux staples like image editor GIMP.