FluxFlux-Se is a light weight Linux distribution based on PCLinuxOS. The developer has also released custom versions designed to work with Eee PC, MSI Wind, and Acer Aspire One netbooks. The original work was all done in German, but there are English language versions of FluxFlux-Eee and FluxFlux-Wind.
The netbook specific versions of the operating system include support for the Intel Atom processor, low screen resolutions, suspend, resume, and the Fn key items for adjusting the volume and screen brightness. Audio, video, wireless, and Bluetooth should work as well.
FluxFlux-Eee is designed to work with Asus Eee PC 700 and 900 series netbooks including the Eee PC 900 and Eee PC 901. It should also work with the Asus Eee PC 1000H. While I can’t see any reason it wouldn’t work with other models including the Eee PC 1000HE or Eee PC S101, I don’t think it’s been tested on these models. The MSI Wind version is designed to work with the MSI Wind U100 and its many clones.