There is an updated kernel available for CentOS-3.1 https://rhn.redhat.com/errata/RHSA-2004-188.html refers. Updated files are :- Common Files i386/updates/RPMS/kernel-BOOT-2.4.21-15.EL.c0.i386.rpm i386/updates/RPMS/kernel-doc-2.4.21-15.EL.c0.i386.rpm i386/updates/RPMS/kernel-source-2.4.21-15.EL.c0.i386.rpm athlon specific i386/updates/RPMS/kernel-2.4.21-15.EL.c0.athlon.rpm i386/updates/RPMS/kernel-smp-2.4.21-15.EL.c0.athlon.rpm i386/updates/RPMS/kernel-unsupported-2.4.21-15.EL.c0.athlon.rpm i386/updates/RPMSkernel-smp-unsupported-2.4.21-15.EL.c0.athlon.rpm i686 specific i386/updates/RPMS/kernel-2.4.21-15.EL.c0.i686.rpm i386/updates/RPMS/kernel-smp-2.4.21-15.EL.c0.i686.rpm i386/updates/RPMS/kernel-hugemem-2.4.21-15.EL.c0.i686.rpm i386/updates/RPMS/kernel-unsupported-2.4.21-15.EL.c0.i686.rpm i386/updates/RPMS/kernel-smp-unsupported-2.4.21-15.EL.c0.i686.rpm i386/updates/RPMS/kernel-hugemem-unsupported-2.4.21-15.EL.c0.i686.rpm source rpm i386/updates/SRPMS/kernel-2.4.21-15.EL.c0.src.rpm These are available at http://mirror.centos.org/3.1/ and should be on all mirrors within a few hours. To update to the latest version 'yum update kernel' should be sufficient. Lance -- uklinux.net - The ISP of choice for the discerning Linux user.