D2 - rom version unrelated - happens on stock system too. So my issue is this: Any time the battery runs low, the phone plays two sounds at the same time. One of them is the standard two-beep warning and i am fine with that one. The other seriously sounds like two tones from a tuba. I wouldn't worry about it, if it wasn't for the fact that said second sound scares the LIVING CRAP out of me if I'm listening to music or etc. Does anyone know what sound file is producing this noise?