If you have issues with cPanel running CentOS5 with BIND then the easiest way is to downgrade BIND to 9.2.4

The reason you're having trouble is because CentOS 5 uses bind-9.3 and CentOS 4 uses bind-9.2 - The changes between these versions is significant enough that cPanel won't work with it properly.

For instance by default there is no /etc/named.conf file created when bind-9.3 is installed and the default named.conf file for bind-9.3 is significantly different than in older versions.

Until the code is updated to work with bind-9.3, I have found the workaround to be to remove bind-9.3 packages and install bind-9.2 packages as follows:
 

check what kernel you are running at the moment

uname -a

and to upgrade your kernel

yum update \kernel*

check if your kernel is added to grub

cat /boot/grub/grub.conf

and then reboot

shutdown -rf now

Log into SSH

mkdir $HOME/.ssh
chmod -R og= $HOME/.ssh
cd .ssh
nano authorized_keys2

Add your key you created with PuttyGen , make absolutly sure you r key is in one line ONLY , otherwise it wont work!

Adjust your  sshd_config

nano /etc/ssh/sshd_config

to

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile      .ssh/authorized_keys2