[CentOS] Centos-ds directory console problem

I installed centos-ds on a 5.5 installation, following the instructions to a tee, however now when I log onto the Directory Console I only get the Servers and Applications and Users and Groups tabs - no Configuration or Tasks tabs. Initially I was using the wrong password for the Directory Manager user, but when I put in the correct password it just sat there saying "Authenticating Directory Manager..." (something like that). So I followed the instructions to change the password, but now it just does the same thing as before - lets me in, but with no Configuration or Tasks tabs. Obviously I'm being logged in as just an admin user as I can add users, groups and ou's to the tree.

Any help on this would be most appreciated.

Thanks, Guy