Had to say goodbye to a few of the new servers today.
When we add multiple servers we always find a couple of machines that have problems. For example, they might be configured slightly differently or have network problems. We had one machine yesterday that thought it had a different IP address to the one actually assigned. Nige and I call these the 'basket cases'.
Instead of spending too much time trying to figure out the problem we have found it is easier to just let them go. This also helps to keep the set-up across the nodes as homogeneous as possible.