I ran into the same problem (no 9.0.4 rpm) on CentOS 6. I downloaded the SRPM from the x86_64 directory at http://yum.postgresql.org/srpms/9.0/ and built a fresh set of rpm with rpmbuild.
> I'm wondering how it's possible to upgrade my fedora system's pg to > the latest minor release. I'm using the PGDG RPMs. A "yum update" > leaves me on version 9.0.2. I'd expect it to put me on 9.0.4. What am > I doing wrong? I installed from pgdg-fedora-9.0-2.noarch . > > Cheers, > John > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general