We have implemented a cluster but seem to be hitting problems regarding node alias's. OS W2k3 SP1

One is logged with the help desk, the problem being, when failing over a resource to the other node,the node alias refuses to deport and so the resource group does not failover. It only fails over when we shut the server down so it is forced to fail.

Secondly we have noticed that we are getting erros in the event log which says, " Unable to refresh WINS registrations for Node Alias "

Anybody else had similar problems?