Our resident Postgres expert Emanuel spoke at the Libre Software World Conference last week about PostgreSQL 9.1, and as the Community Liasion for PalominoDB for a few more days, I am posting the slides so that folks can download them. They are in PPT format:
http://dev.palominodb.com/docs/LSWC_POstgresql_91_English.ppt
Enjoy, and remember that all of our presentation slides and videos are available at any time from our Community -> Presentations page.