I've just merged the new preferences (http://trac.adium.im/wiki/PreferenceRedesign2011) into trunk. There's been a nightly around for a while and only one ticket left (http://trac.adium.im/ticket/15864) which I haven't been able to reproduce again. I think it's now good enough for the regular nightly people to break it.
Onward to 1.6! -- Frank