Hi, On Wed, Jun 24, 2009 at 08:20, <attila.mathe at orange-ftgroup.com> wrote: > Thanks Filipe for your advice, but still can't get the yum to update my > system. > Any idea to which package the missing dependency is belonging to ? >From the yum output only it is hard to tell... You should post your yum config only. For one, it looks like you are upgrading the postgresql-libs package to one that does not include libpq.so.4. Did you configure the pgdg repository? You seem to be using a mix of repositories, in which case you should look into the "priorities" plugin to make it work more smoothly... HTH, Filipe