To upgrade to the Ubuntu release Natty Narwhal (11.04) just type the following command in a Terminal:
do-release-upgrade
Be shure to have enougth space in your hard drive. I had to free 2,8 GB for the new packages and upgraded from 10.10.
Image may be NSFW.
Clik here to view.
Image may be NSFW.Clik here to view.
