Error: Unable to satisfy dependencies
Error: Package glibc-devel needs glibc = 2.3.4-2.43.el4_8.2, this is not available.
Error: Package glibc-devel needs glibc-headers = 2.3.4-2.43.el4_8.2, this is not available.
To allow the smooth update of glibc package first,
# yum remove glibc-devel glibc-headers glibc-kernheaders
Then finally update the glibc packages
# yum install glibc*
I've got the materials for this blog entry from Bug 6018 - Missing dependency in glibc packages yum not updating