Great news! Ubuntu 9.10 was released at the end of October, and it's the best Ubuntu yet! Try it for free or get more information at:
So far I've tried it and it's looking and working better than ever!
If you have an MSI Wind U100 or similar netbook, you may want to know that the brightness glitch can easily be fixed (at the time of this post) by disabling the 3D desktop effects. At least that worked for me.