Ubuntu officially released version 9.04 Thursday and CNET favorably compares the 'Jaunty Jackalope' desktop to Microsoft's and Apple's latest. Here's a taster:

Now, just like Microsoft has taken the blowtorch to Vista to produce the lightning-quick Windows 7, which so far runs well, even on older hardware, Ubuntu has picked up its own game.

I particularly noticed the Ubuntu difference when I put the operating system to the test by simultaneously launching and using multiple applications, listening to music and more while using my spare CPU cycles in the background to encode high-definition video with Mencoder. Ubuntu still felt very fast--even with traditionally sluggy pieces of software like OpenOffice.org.

It's not just the speed changes, however, that has got me excited about Ubuntu 9.04. It's also the subtle additions to the interface; the logical move of shutdown and reboot options to the far right of the menu; the slick new notifications system; the seamless (finally!) integration of the Nvidia accelerated drivers, and the cleaned-up options and package install systems.

Want Adobe Flash or other proprietary software like multimedia codecs on Ubuntu? Just search for them in the one location, under their own names. No downloading anything from any Web sites. No package management or dependencies. No apt-get. Point and click.