@normen: i know you played a part in constructing SimpleWaterProcessor, do you know anything about this artifact? It currently seams a little out of my noob league to start debugging this.
The transformation under reproduces the problem:
[java]
cam.setLocation(new Vector3f(36.63214f, -15.051128f, 39.71877f));
cam.setRotation (new Quaternion(0.09027442f, 0.27534965f, 0.0030846794f, 0.9570912f));
[/java]