Hi, postgresql 8.3.4 is available, please put a new version in the tree. It contains a lot of important fixes: http://www.postgresql.org/docs/8.3/static/release-8-3-4.html
dev-db/postgresql-base-8.3.4, dev-db/postgresql-docs-8.3.4 and dev-db/postgresql-server-8.3.4 are all in the tree. So if you want 8.3.4 you could migrate from the "old" dev-db/postgresql and dev-db/libpq ebuild.
D'oh, I didn't notice the change in packet naming. Thanks! :)