Trying to resurrect this - phenigma how far has your builder progressed - or is it like me - been on hiatus?
Not sure specifically what you mean by how far my builder has progressed? I had previously built all the packages for raspbian/armhf and they are up at dropbox for use in sources.list. It has been a few months since I've done a rebuild of those packages but they work just fine with a 1004 core. I have been puttering away the whole time.
I have a full MD running on 512MB RPi, photo-screensaver and UI1 with USB-UIRT. Full MD with screensaver crashes on 256mb rpi. The only piece of the puzzle that is missing is an omxplayer (a la mplayer_player) to handle media playback on the pi.
MD creation is essentially worked out, I have copious notes and have been working on updating scripts for proper MD functionality with as little alterations to current scripts as possible. I have been waiting for 1004 release and lifting of feature freeze so I can request svn access and update everything I have here into svn.
Talking with golgo we decided that a UI1 based MD on rpi is the way to go until qorbiter matures more.
So... if there is anything that people could/should try to work on it is an omxplayer for pi mds. With that we would have essentially complete MD functionality on the rpi.