I've maintained for some time now a preseed file (previously called "uquick") that you can use with your Ubuntu Server and Alternate ISO boot options, to quickly and automatically install an Ubuntu server.
That url (http://bit.ly/uquick), has been broken for a month or so since I've left Canonical and all my people.canonical.com/~kirkland/* pages have been purged.So now, you can boot an Ubuntu Server ISO, press F6 for Other Options, and append the following::
local=en_US priority=critical url=http://bit.ly/uinstall
Enjoy!
:-Dustin








