After a long, long wait, Ubuntu Linux fans have been testing out the latest flavor all weekend. Ubuntu 9.04 Desktop, which is more affectionately known as “Jaunty Jackalope,” has just been made available. Also of note, the Ubuntu 9.04 Netbook Remix — which is obviously tweaked to work best on low-power netbooks — can be downloaded today. Oh, and if you’re into servers, Ubuntu 9.04 Server is best suited for your needs.If you’re new to the Linux realm, here’s an overview about what exactly this operating system