Ubuntu is a good distro, but now and then, Ubuntu’s developers have strange ideas. The last one is called Unity (on the Netbook Edition).
If you have a netbook, you have a small screen, so you need to maximize the space available for applications, right?
Wrong! Referring to next Ubuntu release:
In Ubuntu Desktop, you will have two small panels, one at the bottom, that you can get rid off, and another at the top, that you can hide when not needed. So, in fact you can have only one small panel, that hides when not needed.
In Ubuntu Netbook Edition, you will have a top small panel and Unity, which is a large panel (it has big icons) on the side of the screen and does not hide!
(you can see some screenshots of Unity here)
Does it make sense to you?