[ale] Has anybody used dspace

[wolf at wolfhalton.info (Wolf Halton)]

I am looking at a web app server called dspace http://dspace.org
it is requiring all sorts of interesting stuff like tomcat (which has 
never done well for me in the past) and postgre (which I have never 
needed in a project before).
I can't use my shared hosting to do it, so I am working off my testing 
server.
so far, I have made my testing server visible on the interwebs (another 
1st for me), and I am setting up tomcat next.
The server is Ubuntu 11.04
Hints and considerations?