Hi, thank you for maintaining the CentOS FAQ at http://wiki.centos.org/FAQ/General it is very helpful. I used to follow the procedure outlined in "22. I installed the x86_64 version, so why do I have i386 packages, and can I get rid of them?" ( http://wiki.centos.org/FAQ/General#head-357346ff0bf7c14b0849c3bcce39677aaca528e9 ) but it recently stopped working. the last step, "yum reinstall \*" now throws errors about missing dependencies. (This is starting from CentOS 5.4) However if I run "yum -y update" as the very first step, and then do the procedure, it works beautifully. I don't know what is the cause of this, but in the course of troubleshooting it, I've learned that "rpm -Va | grep ^missing" will tell me if any files are missing, and if "yum reinstall \*" is even necessary. It is faster to run the package verification and skip the reinstall, as reinstall involves re-downloading all the packages over the network. I'd like to suggest the FAQ be updated with: Run "rpm -Va | grep ^missing" to see if any files are missing. If there are, reinstall with "yum reinstall \*" Best, -at