InfoWorld published a review on Ubuntu 9.04
>> First look: Ubuntu 9.04 stays the course
Having rocketed to prominence as one of the most popular desktop Linux distributions in just a few years, Ubuntu has earned a reputation for stability and ease-of-use. The latest edition -- version 9.04, code-named "Jaunty Jackalope" -- continues that tradition and is mostly a maintenance release, but it brings a number of updates that should enhance its appeal.
>> First look: Ubuntu 9.04 stays the course