Maximum PC has an informative article about which OS to use on your netbook
As they say
“That shiny new netbook is light and portable, plays music and movies, and cost less than an iPhone (with service). Problem is: you might be ready to chuck it off a bridge. Running the Intel Atom processor at only 1.60GHz, netbooks are a bit on the clunky side when it comes to actual data processing. No one is going to play World of Warcraft on one of these thin machines, but it sure would be great if OpenOffice, a music player, and Mozilla Firefox could run a little faster.”
There conclusions though are a bit unconclusive!
Windows XP
“We ended up viewing Windows XP as a “live with it, not like it” OS for netbooks, something you use if you can’t stand any of the other more updated OSes, such as Ubuntu or Moblin. It’s just not that exciting to think you will go back in time and use an OS that has worn out its welcome.”
Windows 7
“We didn’t really expect Windows 7 to run fast on the Aspire One, but Microsoft may still surprise everyone and release a stripped-down version that runs faster on netbooks. In the end, we were not impressed with the boot time, long install process, and sluggish behavior with multiple apps running.”
Ubuntu for Netbooks Remix
“We picked Ubuntu for Netbooks Remix because it runs the fastest with multiple apps open, had some of the best UI features (such as a main screen intended for those unfamiliar with Linux), loaded and booted quickly, and just looks the best compared to all of the other OSes.”
Moblin
“We’re big fans of Moblin, it just needs work before it is ready to take up disk space as our netbook OS of choice. Ubuntu for Netbooks has the leg up here, but we do prefer the Moblin look and feel, quick access to Twitter, and the fact that it runs reasonably fast (with occasional stall-outs).”
Slax
“So, if Slax performed so well in our tests, you might wonder why we did not pick it as the best choice for netbooks. Speed is important, and a main goal was to make the Aspire One run faster. However, we just were not as impressed with the OS overall, especially in terms of customization options, software support, and options for how you install it. You might be able to find a USB install and get Slax running well on a netbook, but one criterion we had was that the download and install process be easy and the OS work well without a lot of tweaking, and Slax falls short.”
The full article give a lot more detail, but I think you can get the idea from their conclusions !
Personally I think I’ll stick with my MacBook ! !