Ubuntu
is a new,
Debian
based Linux distribution.
It will stay absolutely free of charge like
Debian,
but will provide regular and predictable releases.
OpenGroupware.org intends to provide high quality
Ubuntu
packages based on the
Debian
packages by Sebastian Ley and targets possible inclusion into Ubuntu.
Note that you should expect issues when you try to use the binary Debian
packages for Ubuntu. Stay tuned for packages build on Ubuntu Warty.
Besides that 'minor' annoyance most of the instructions for Debian Sarge
should apply on Ubuntu.
Warty
As mentioned, please stay tuned for Warty packages. In the meantime you
might want to build from source and
follow the generic install instructions.