Life is becoming pretty difficult for drones lover in Belgium: apparently the department of air transports in Belgium has either approved a new law or a new interpretation of an old one, which equiparates drones to any other RC aircraft: under that interpretation, drones can only take off from approved terrains, and can only go maximum 400m from the RC club, and must stay at more than 200m from any building.
That means that basically autonomous drones like Arducopter can do autonomous missions only inside the air space of the RC club, so they cannot even be tested in your own garden. This is even a bigger threat to other "toy drones" like Ar.Drone, because I doubt people that buy such "toys" will ever join a RC club (which might cost a few hundreds euro per year).
The article cites that the main problem is the protection of privacy since all drones are equipped with cameras and might pictures.
Here is the link to article that discusses about that topic: Drones à usage civil en Belgique : interdiction de décoller depuis ... (in French, sorry).