Hello, In the errata for SL450-i386, there are the following updates for libpng10 : libpng10-1.0.16-3.1.i386.rpm 31-Oct-2007 10:49 148K libpng10-1.0.16-3.el4_7.3.i386.rpm 05-Mar-2009 10:03 148K It seems YUM is not able to perform correctly the comparison and, if I install libpng10-1.0.16-3.el4_7.3.i386.rpm, yum list updates says : yum list updates Loading "kernel-module" plugin Setting up repositories Reading repository metadata in from local files Updated Packages libpng10.i386 1.0.16-3.1 sl-errata libpng10-devel.i386 1.0.16-3.1 sl-errata => So, it want to reinstall the oldest version... Any explanation ? Thanks. JM -- ------------------------------------------------------------------------ Jean-michel BARBET | Tel: +33 (0)2 51 85 84 86 Laboratoire SUBATECH Nantes France | Fax: +33 (0)2 51 85 84 79 CNRS-IN2P3/Ecole des Mines/Universite | E-Mail: [log in to unmask] ------------------------------------------------------------------------