I've been considering a local install of DSpace for my organization so that we can have, among other benefits, good universal document identifiers for publications we generate (e.g., contractually required documents, conference papers). I would be interested in knowing of any experience others may have using DSpace or similar systems.
DSpace is pretty easy to get a basic setup going, though it can easily suck a lot of your time if you let it. OTOH, if you want something you can setup an let your clerical support run Greenstone DL (greenstone.org)is simpler, and you can migrate to Dspace later.