CentOS - Feb 2010 - priorities don't prevent other repos overwritting packages?

Either I've made a mistake in my configuration or else packages from
other repos can obsolete core packages

For example, I did a "yum update" on some rpmforge packages and saw
this:

Installing:
 perl-Date-Manip          noarch  5.54-2.el5.rf                 rpmforge  210 k
     replacing  perl-DateManip.noarch 5.44-1.2.1

 perl-IO-Compress         noarch  2.024-1.el5.rf                rpmforge  242 k
     replacing  perl-Compress-Zlib.i386 1.42-1.fc6


If I try to install the original packages:

% yum install perl-Compress-Zlib
Loaded plugins: priorities
476 packages excluded due to repository priority protections
Setting up Install Process
Package perl-Compress-Zlib is obsoleted by perl-IO-Compress, trying to install
perl-IO-Compress-2.024-1.el5.rf.noarch instead
Package perl-IO-Compress-2.024-1.el5.rf.noarch already installed and latest
version
Nothing to do

% yum install perl-DateManip
Loaded plugins: priorities
476 packages excluded due to repository priority protections
Setting up Install Process
Package perl-DateManip is obsoleted by perl-Date-Manip, trying to install
perl-Date-Manip-5.54-2.el5.rf.noarch instead
Package perl-Date-Manip-5.54-2.el5.rf.noarch already installed and latest
version
Nothing to do

I have rpmforge with priority=10
I have the centos base and update repositories with priority=1

Have I made a stupid mistake with my configuration?

-- 

rgds
Stephen

On Mon, Feb 15, 2010 at 09:00:33PM -0500, Scot P. Floess
wrote:
> 
> Do you have the yum-priorities package installed?
Yes, as can be seen from the output I included :-)

   > >Loaded plugins: priorities
   > >476 packages excluded due to repository priority protections

-- 

rgds
Stephen

Stephen Harris wrote on Mon, 15 Feb 2010 20:53:40 -0500:
> Either I've made a mistake in my configuration or else packages from
> other repos can obsolete core packages
You want to add 
check_obsoletes = 1
in priorities.conf.
That should be set by default, but isn't.

Kai

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