I found these dependency problems when running repoclosure with the -n option, which makes repoclosure consider only the newest versions of each package. #1 and #3 are only a problem if EPEL is enabled. I'm not sure if these require any action, but I wanted to get these off my chest anyway. Issue #1, gmime: The following packages are in CentOS 5 Extras: - gmime-2.2.10-5.el5.centos - gmime-devel-2.2.10-5.el5.centos - gmime-sharp-2.2.10-5.el5.centos EPEL has: - gmime-2.2.26-1.el5 - gmime-devel-2.2.26-1.el5 Now if someone has gmime-sharp-2.2.10-5.el5.centos and its dependency gmime-2.2.10-5.el5.centos installed and runs "yum update" with EPEL enabled, there will be a dependency problem. yum would like to update gmime to 2.2.26, but it can't, because the old version is required for gmime-sharp. Issue #2, drbd: The following packages are in CentOS 5 Extras: - drbd-8.0.16-5.el5.centos - drbd82-8.2.6-1.el5.centos - drbd83-8.3.15-2.el5.centos - kmod-drbd-8.0.16-5.el5_3 - kmod-drbd-xen-8.0.16-5.el5_3 - kmod-drbd82-8.2.6-2 - kmod-drbd82-xen-8.2.6-2 - kmod-drbd83-8.3.15-3.el5.centos - kmod-drbd83-xen-8.3.15-3.el5.centos If I install kmod-drbd and its dependency drbd with "yum install kmod-drbd" and then run "yum update drbd", yum will attempt to replace drbd with drbd82, because drbd82 obsoletes drbd. This will fail, because drbd is required by kmod-drbd. Issue #3, xfprint: xfprint-4.4.2-1.el5.centos is in CentOS 5 Extras. If I have installed that with "yum install xfprint --disablerepo=epel" and then run "yum update" with EPEL enabled, I get this: --> Running transaction check --> Processing Dependency: libxfce4mcs-client.so.3()(64bit) for package: xfprint --> Processing Dependency: libxfce4mcs-manager.so.3()(64bit) for package: xfprint ---> Package libxfce4util.x86_64 0:4.6.2-1.el5 set to be updated ---> Package libxfcegui4.x86_64 0:4.6.4-1.el5 set to be updated --> Processing Dependency: xfce-mcs-manager >= 4.4.2 for package: xfprint ---> Package xfce4-settings.x86_64 0:4.6.5-3.el5 set to be updated --> Processing Dependency: libexo-0.3.so.0()(64bit) for package: xfce4-settings ---> Package xfconf.x86_64 0:4.6.2-3.el5 set to be updated --> Running transaction check ---> Package exo.x86_64 0:0.3.107-2.el5 set to be updated --> Processing Dependency: xfce4-doc for package: exo --> Processing Dependency: libxfce4mcs-client.so.3()(64bit) for package: xfprint --> Processing Dependency: libxfce4mcs-manager.so.3()(64bit) for package: xfprint --> Processing Dependency: xfce-mcs-manager >= 4.4.2 for package: xfprint --> Running transaction check --> Processing Dependency: libxfce4mcs-client.so.3()(64bit) for package: xfprint --> Processing Dependency: libxfce4mcs-manager.so.3()(64bit) for package: xfprint --> Processing Dependency: xfce-mcs-manager >= 4.4.2 for package: xfprint ---> Package xfce4-doc.x86_64 0:4.6.2-3.el5 set to be updated --> Finished Dependency Resolution xfprint-4.4.2-1.el5.centos.x86_64 from installed has depsolving problems --> Missing Dependency: libxfce4mcs-client.so.3()(64bit) is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) xfprint-4.4.2-1.el5.centos.x86_64 from installed has depsolving problems --> Missing Dependency: xfce-mcs-manager >= 4.4.2 is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) xfprint-4.4.2-1.el5.centos.x86_64 from installed has depsolving problems --> Missing Dependency: libxfce4mcs-manager.so.3()(64bit) is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) Error: Missing Dependency: libxfce4mcs-client.so.3()(64bit) is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) Error: Missing Dependency: xfce-mcs-manager >= 4.4.2 is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) Error: Missing Dependency: libxfce4mcs-manager.so.3()(64bit) is needed by package xfprint-4.4.2-1.el5.centos.x86_64 (installed) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest If I now remove xfprint and run "yum update" again with EPEL enabled, I get: ---> Package libxfce4util.x86_64 0:4.6.2-1.el5 set to be updated ---> Package libxfcegui4.x86_64 0:4.6.4-1.el5 set to be updated ---> Package xfce4-settings.x86_64 0:4.6.5-3.el5 set to be updated --> Processing Dependency: libexo-0.3.so.0()(64bit) for package: xfce4-settings ---> Package xfconf.x86_64 0:4.6.2-3.el5 set to be updated --> Running transaction check ---> Package exo.x86_64 0:0.3.107-2.el5 set to be updated --> Processing Dependency: xfce4-doc for package: exo --> Running transaction check ---> Package xfce4-doc.x86_64 0:4.6.2-3.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: xfce4-settings x86_64 4.6.5-3.el5 epel 324 k replacing xfce-mcs-manager.x86_64 4.4.2-1.el5.centos xfconf x86_64 4.6.2-3.el5 epel 152 k replacing libxfce4mcs.x86_64 4.4.2-1.el5.centos Updating: libxfce4util x86_64 4.6.2-1.el5 epel 122 k libxfcegui4 x86_64 4.6.4-1.el5 epel 351 k Installing for dependencies: exo x86_64 0.3.107-2.el5 epel 1.8 M xfce4-doc x86_64 4.6.2-3.el5 epel 219 k Transaction Summary ================================================================================ Install 4 Package(s) Upgrade 2 Package(s) This will update the packages as described. I provided this listing to hopefully provide a better picture of which packages are obsoleted by other packages.