GUI appears even if bool is false

Hi everyone. I have a little problem because my GUI suddenly appears even if the bool controlling it is false...

This is the code:

 void OnGUI()
     {
         GUI.skin = Counter;
         if (!gameOver)
         {
             GUI.Label(new Rect(0, 0, 100, 60), "Score : " + points);
             GUI.Label(new Rect(Screen.width - 90, 0, 90, 60), "Level: " + current);
             if (timeTrial)
             {
                 GUI.Label(new Rect(Screen.width / 2 - 50, 0, 100, 30), timeLeft.ToString());
             }
         }
         else if (gameOver)
         {
             GUI.skin = BG;
 
             GUI.Box(new Rect(Screen.width / 2 - 160, Screen.height / 2 - 160, 320, 220), "Game Over");
 
             GUI.skin = Menu;
             if (GUI.Button(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 130, 300, 90), "TRY AGAIN"))
             {
                 blockCount = 0;
                 current = 0;
                 points = 0;
 
                 if (timeTrial)
                 {
                     timePassed = 0;
                     timeLeft = maxTime;
                 }
 
                 gameOver = false;
                 Time.timeScale = 1.0f;
 
                 if (Application.loadedLevel == 1)
                 {
                     Application.LoadLevel(1);
                 }
                 else Application.LoadLevel(2);
                 Debug.Log(gameOver + " " + Application.loadedLevel);
             }
             if (GUI.Button(new Rect(Screen.width / 2 - 150, Screen.height / 2 - 40, 300, 90), "BACK"))
             {
                 Application.LoadLevel(0);
             }
         }

As you can see there is a debug command and the gui shows up even if gameOver = false.

Does anyone know why?