I got tired of the Update Manager in Ubuntu complaining that I had software packages to update and I sort of wanted to play with Ubuntu One so I started the 2 hrs process of updating from 9.10 to 10.04. The first thing I noticed after the update was done was that there was a "communication" app on my toolbar that allowed me to all of my Facebook, Twitter, and chat accounts. It also had a section for Ubuntu One which I set up and will play with later.
My biggest issue with Lucid Lynx was that they changed where the gadgets were on the windows. Why? Because it's gnome and they want to make our life easier that's why. Of course they never asked us, they just assumed Apple style that they knew what was best. Below is a picture of the old window border (gadgets on the right) and the new window border (gadgets on the left). Below that is a command line string to put your new border back to the way it's been for thousands of years.
To set the gadgets back to the top right had corner paste this into a terminal.
gconftool-2 –set “/apps/metacity/general/button_layout” –type string “menu:minimize,maximize,close”