The downloads for Ubuntu 12.04 Precise Pangolin are available at the following links.
precise-desktop-i386.iso 12-Feb-2012 07:59 719M Desktop CD for PC (Intel x86) computers (standard download)
precise-desktop-powerpc.iso 12-Feb-2012 07:59 726M Desktop CD for Mac (PowerPC) and IBM-PPC (POWER5) computers (standard download)
precise-desktop-amd64.iso 12-Feb-2012 07:58 717M Desktop CD for 64-bit PC (AMD64) computers (standard download)
These ISO images are slightly oversized for a 700 MiB CDR, you will need a 1 Gigabyte mini DVD disc or a full 4.7 Gigabyte DVD-R to burn these images. There are no downloads available yet for the Ubuntu 13.04 distribution yet, that will come out when it is done.
good point brian. i unedrstand marks reasons and i agree, especially since its his company to do with how he chooses. and so far his choices have been spot on. i like gnome. but i stress the current gnome. gnome 3 will suck badly for 2 reasons. no compiz and slow as he**. unity will allow compiz. hmmm, desktop with 3d effects i can choose or desktop without? the author of this post just seems to be spouting off. yep mac left the touching to its mouse. exactly! the author seems to think the touch stack is only for screens on ubuntu while other os have many devices. and as far as using a netbook interface on a desktop or laptop, why not? i have it installed so i can get used to it when i dump gnome(when it is gnome 3) and right now my only complaint is i would like some say in how the task panel is set up. how can one claim to have some expertise and yet be so inflexible? linux is about choice and right now unity is more linux than gnome.