I recently finished installing
Ubuntu 10.04 LTS on my laptop. Having used Ubuntu before, I can see that there has been a massive push for improvement. Some changes include the Ubuntu
rebranding. Most notable is the default theme which is no longer brown and now has the Close - Maximize - Minimize window control buttons on the upper left corner ala Mac OS X style.
The last version of Ubuntu that I extensively used was 9.04 but I had problems with the Wifis so it only took me a month and I decided to take it down and return to the Redmond-centric OS. But much has changed in 10.04 LTS. Almost everything basic works out of the box. The Wifis is now easily configurable and connects instantly after the initial setup of access point, etc. In fact, I have removed Windows XP from my computer and installed Ubuntu 10.04 LTS as the main, and only, OS.