Restarting scene not working properly

That sucks.. Indeed the static variables fail to reset... Anyway I can hardcode that ? Telling them to reset ?

Well there are two ways:

1. Don't use static variables. Sometimes they are useful but they often make more problems then they help. They should only be used if really possible.

2. Reset the necessary varibles in the OnLevelWasLoaded() function.

Since there aren't too many, but they are referenced a lot, the second option sounds good.

Can you tell me, OnLevelWasLoaded() function, in what script (and where in the script) should be put ?

It should be the first script that the games starts to interpret ?

You can put the OnLevelWasLoaded function in any script that exist from the start of the scene. So not one that is attached to a gameobject that's instantiated later.

It can be added like any other function:

Reference: http://docs.unity3d.com/Documentation/ScriptReference/MonoBehaviour.OnLevelWasLoaded.html

I'm gonna make one of my comments to an answer so that you can accept it to mark the question as solved.

I have it connected to my main camera. Is it good enough ? I'm asking because it is still not working...