About the iPhone Calendar ... you can set an alert (5 min, 15 minutes, so on) but it will only go off once - it's a short ringtone, only plays once and leaves a message on screen.

I really wished It kept me warning like once every minute or 5 minutes ... until I decided to do something about it. Does anyone know how to change this ?

Oh, and the ringtone is not loud at all, I could easily not hear it even while speaking to someone else in a quiet ambient ... anyone know how to change that ?