I seem to have lost audible notification of an incoming text message! I still get vibration and the LED flash. I ring for incoming phone calls.
In "Sound & Ringtones", I've checked that "Ringer Switch On" is set properly, with "Rings & Alerts" to "Sound & Vibrate", "System Sounds" to "on" and all volumes set loudly.
Any ideas? I've installed a few hacks here and there but nothing involving sound...