Ok, so I am having a problem with yield.WaitForSeconds but i may also be an issue with boolean referencing in a different script. Basically i have three states for my enemy: chase, patrol and deactivated. All of these states now work. The deactivated state is triggered by a boolean in attached to a console in the game. So when this console has been activated then the enemy is disabled. However i only want this to last a certain amount of time. Say 10 seconds. I tried using yield.WaitForSeconds(10); however for some reason this just makes my enemy spin around very slowly instead of going to it's waypoints.

var waypoints : Transform [];
var currentPoint : int = 0;

var state : String = "patrol";
var speed : float = 10;
var chaseDist : float = 15;
var gravity : float = 15;

private var controller : CharacterController;
private var player : Transform;
private var alert : ParticleEmitter;

function Start(){
    alert = gameObject.Find("alert").particleEmitter;
    player = gameObject.FindWithTag("Player").transform;
    controller = GetComponent(CharacterController);    

}

function Update () {

    var playerDist = Vector3.Distance(player.position, transform.position);

    if (playerDist <= chaseDist && GameObject.Find("consoletexture").GetComponent("consoleRange").consoleActive == false){
       state = "chase";  
       //new state attempt//
    }else if(GameObject.Find("consoletexture").GetComponent("consoleRange").consoleActive == true){

       state = "deactivated";

       }else {
       state = "patrol";
    }

    if(state == "patrol"){
       alert.emit = false;
       renderer.material.color = Color.green;

       if(currentPoint < waypoints.length) {
         Mover(waypoints[currentPoint].position); 
       }

    } else if (state == "chase"){
       alert.emit = true;
       renderer.material.color = Color.red;
       Mover(player.position);
    } else if (state == "deactivated"){

       Debug.Log("enemy deactivated");
       yield WaitForSeconds(10);
       state == "patrol";
    }
}

function Mover(target : Vector3){

    var diffVector: Vector3 = target - transform.position;

    var movement : Vector3;

    if(diffVector.magnitude > 1){
     movement = (diffVector.normalized * speed);

    }else{
       currentPoint = (currentPoint + 1) % waypoints.length;

    }

    movement.y -= gravity * Time.deltaTime;
    controller.Move(movement * Time.deltaTime);

    transform.LookAt(target);

}

so everything works perfectly until i added in the section:

    Debug.Log("enemy deactivated");
    yield WaitForSeconds(10);
    state == "patrol";