I will admit to being a Linux desktop nonbeliever. It feels a bit like yesterday's battle fought with the wrong weapons: geekiness rather than ease of use. There's a chance--still a slim one, but a chance nonetheless--that Ubuntu will change that.
In three separate places today I read reviews of Ubuntu's new desktop (7.10). Two were very complimentary, while the third suggested that Ubuntu give up.
Ubuntu upgrades the Linux desktop experience in two ways: user interface and form factor. While Novell continues to be the leader in traditional desktop replacements, Red Hat is reinventing the Linux desktop for new markets with its One Laptop Per Child involvement. Ubuntu is arguably doing the same, but is going one step further in disruption: Changing the notion of the Linux "desktop" completely: