Also CentOS 5.2 is DEAD and unsupported,and has been for ~3 years .
cent ONLY supports the current version .That version is CentOS5.6
or
the newer CentOS 6.0
the current and only versions are Cent 4.9 , 5.6 , and 6.0
install the current 5.6 DVD . Skipping 4 minor versions - may or may not work from the upgrade option ?
might kill the system ? might ?