Rather than show the dmesg information during boot-up, Ubuntu 9.10 displays this minimal boot screen based on the Ubuntu logo. The same logo is used during installation, and later on when booting into Ubuntu 9.10 from the hard drive.
The GDM (GNOME Display Manager) has had a fresh coat of paint applied to fit in with the boot screen theme. The minimalism of this screen is refreshing.
Ubuntu One is a service that synchronises and shares files across multiple Ubuntu instances — it's similar in many ways to Dropbox. Free sign-up gives users a 2GB limit that's upgradeable for $10 a month to 50GB.
The Ubuntu Software Center's search functionality works a lot better than Synaptic.