I've just completed the first successful from-scratch installation of etch using the FAI-based CSAIL Debian installer. There were a few updates I had to make in order to get our installer to work using newer versions of FAI, but nothing too complicated. Over all it took just a couple of days of work, and is now working quite well. I've fixed a number of outstanding bugs in the process, and have added the ability to install on machines without static IP addresses. I'm not sure we actually want to support running CSAIL Debian on dynamic IPs, but the ability to do the installation will come in handy.