BUG #7512: can't install pgdg-centos91-9.1-4.noarch.rpm

The following bug has been logged on the website:

Bug reference:      7512
Logged by:          Jana Weschenfelder
Email address:      s0525775@htw-berlin.de
PostgreSQL version: 9.1.0
Operating system:   Scientific Linux 6
Description:        =


Hello, =


If I try to install Postgresql91 (in this case
postgresql91-9.1.5-1PGDG.rhel6) from
http://yum.pgrpms.org/9.1/redhat/rhel-6-x86_64/repoview/, I receive the
message that the package "centos-release" is missing. Ok, but if I try to
install "centos-release-6-3.el6.centos.9.x86_64" then, the follow error
message occurs: "file /etc/issue from install of
centos-release-6-3.el6.centos.9.x86_64 conflicts with file from package
sl-release-6.2-1.1.x86_64" (which I understand).

Does Postgresql91 really support Scientific Linux?

Many thanks,
Jana