Symptom
When you remove a cluster, Stop and Start the service, then create a New Cluster and try to add a node, Qadmin won't add it.
Solution
Update to Mac OS X 10.3.2 using the Software Update Preferences or download from document 120288 "
Mac OS X 10.3.2 Update: Information and Download."
Update to Shake Qmaster 1.1 by downloading the Shake 3.0.1 update from the Shake download page at (
http://www.apple.com/shake/download/).