I've got three of them, two that are brand new. The keys have rubber dampers so they don't slam directly against bare plastic if you release the keys quickly but they're still a little noisy, the springs make some noise too but we're not talking $500 keyboards either, so yes it's expected and they are a bit noisy from day one. After watching a few videos of performaces on old historic organs the keys are very quiet in comparison so I figured it isn't so bad after all. Check out some videos of Michel Chapuis playing the Cliquot at Versailles, now there's some noisy keys!
Marc