Now my iPhone 4s (jailbroken) has started making this weird random noise. It sounds like an alien throwing up for 1-2 seconds. There is no notification on the screen when it happens, so its not a notification sound. I don't believe I installed any new app since hearing this, so I don't know what triggered it. I tried powering off, rebooting, respringing, etc. It may be hours or minutes between occurences, but it still occurs. Anyone have a clue?