Certain timers run too fast

I'm having a strange problem with timing in only certain scenes of my build. For instance, in my Loading scene, I use the following simple method for controlling my countdown:

void Update () { timer += Time.deltaTime; if (timer >= timeToWait) { Application.LoadLevel ("MainMenu"); } }

This works fine in the Inspector and when I compile a build and run it on my development machine. However, when I move it to my production machine, it counts down very quickly; probably hitting 0 after about two or three seconds.

In another scene, I "blink" some text by looping the alpha value in a method called from Update:

 function UpdateTextAlpha()
 {
     // Fade font in proper direction.
     
     if (c.a >= 1)
     {
         fontFadeIn = false;
     }
     
     if (c.a <= 0)
     {
         fontFadeIn = true;
     }
     
     if (fontFadeIn == true)
     {
         c.a += Time.deltaTime;
     }
     else
     {
         c.a -= Time.deltaTime;
     }
 }

Again, this is fine in the Inspector and when running a build on my development machine; however, on the production machine, it is way too fast.

On the other hand, I use the first method in other scenes, and the countdown is perfect. Any idea where I'm going wrong? Thanks.

Update: I tried copying my entire scene to a new project and testing just that scene. The countdown timer runs fine when I do that.