[CentOS] 5.2 to 5.4

Wed Jan 27 20:11:10 UTC 2010
Jerry Geis <geisj at pagestation.com>

I am trying to update x86_64 from 5.2 to 5.4

I am trying to update glibc first (before yum -y upgrade) with the command
yum update glibc glib-devel glibc-headers
gives me the following:

package glibc-devel needs glibc-headers = 2.5-24.el5._2.2 this, is not 
package glibc-devel needs glibc = 2.5-24.el5._2.2, this is not available.

am I missing something? usually this works fine.