I happened to notice that my iPhone4's alarm doesn't go off only when I set the day that it should. For example I have an alarm for Mon Wed at 8:00 and it didn't go off, nor did on Monday. However, it does without the specific day. Careful on how you set the alarm. Does anyone know how to send the feedback to Apple from the website? I couldn't find the page. Cheers. PS: I tried to shift a day forward and a day after and still doesn't go off.