I don't know if these have been posted before, but in case they
haven't, I stumbled across these two news bits (a month old or so):
Revolution 2.1 supports PostgreSQL:
http://www.macnn.com/news/20786
Education.au used PostgreSQL for their database of choice:
http://www.linuxworld.com.au/index.php?id=298405703&fp=2&fpid=1
-sc
--
Sean Chittenden