Super-fast, easy to use and free, the Ubuntu operating system powers millions of desktops, netbooks and servers around the world. Ubuntu does everything you need it to. It'll work with your existing PC files, printers, cameras and MP3 players. And it comes with thousands of free apps.
All other troubles can be easely found on the internet. If you got a problem, just search with google and you will find a solution.
If you ask about "Virusses" , well there aren't "Virusses" for Linux. Never install things you didn't ask...and you will never have a problem! So virusscanners, you don't need this....no memory or money spending on that.
You want to try Ubuntu? Downloand here...