Hi, On Fri, Jul 24, 2009 at 10:07, Sam Drinkard<sam at wa4phy.net> wrote: > ---> Package httpd.x86_64 0:2.2.3-22.el5.centos.2 set to be updated > ---> Package httpd-devel.x86_64 0:2.2.3-22.el5.centos.2 set to be updated > [...] > Error: Missing Dependency: httpd = 2.2.3-22.el5.centos.1 is needed by > package httpd-devel-2.2.3-22.el5.centos.1.i386 (installed) You have a 64-bit machine but a 32-bit httpd-devel package installed. To fix your problem, uninstall the 32-bit version of httpd-devel, with this command: # rpm -e httpd-devel.i386 After that, yum update should complete successfully. Now, as to why this happened, the 64-bit version of CentOS (and RHEL) includes 32-bit versions of some packages. Maybe in the past httpd-devel was provided in both 32-bit and 64-bit versions, and you ended up installing both versions of the package, but now only the 64-bit version is provided, so the upgrade of the 32-bit version is not available anymore. I've seen similar problems happen with other packages, so I believe the same might have happened with httpd-devel too. HTH, Filipe