tried normal "redhat way update", without any success: yum upgrade Setting up Upgrade Process No Packages marked for Update why? cat /etc/yum.repos.d/sl.repo [sl] name=Scientific Linux $releasever - $basearch baseurl=http://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/os/ http://ftp1.scientificlinux.org/linux/scientific/$releasever/$basearch/os/ http://ftp2.scientificlinux.org/linux/scientific/$releasever/$basearch/os/ ftp://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/os/ #mirrorlist=http://ftp.scientificlinux.org/linux/scientific/mirrorlist/sl-base-6.txt enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-sl file:///etc/pki/rpm-gpg/RPM-GPG-KEY-dawson [sl-security] name=Scientific Linux $releasever - $basearch - security updates baseurl=http://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/updates/security/ http://ftp1.scientificlinux.org/linux/scientific/$releasever/$basearch/updates/security/ http://ftp2.scientificlinux.org/linux/scientific/$releasever/$basearch/updates/security/ ftp://ftp.scientificlinux.org/linux/scientific/$releasever/$basearch/updates/security/ #mirrorlist=http://ftp.scientificlinux.org/linux/scientific/mirrorlist/sl-security-6.txt enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-sl file:///etc/pki/rpm-gpg/RPM-GPG-KEY-dawson [sl-source] name=Scientific Linux $releasever - Source baseurl=http://ftp.scientificlinux.org/linux/scientific/$releasever/SRPMS/ http://ftp1.scientificlinux.org/linux/scientific/$releasever/SRPMS/ http://ftp2.scientificlinux.org/linux/scientific/$releasever/SRPMS/ ftp://ftp.scientificlinux.org/linux/scientific/$releasever/SRPMS/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-sl file:///etc/pki/rpm-gpg/RPM-GPG-KEY-dawson -- Eero