Doing some light troubleshooting, it appears to be camera-related? It happens 100% of the time immediately upon taking a photo in Cheese. But doesn't happen when loading cheese, oddly. Also seems to happen randomly sometimes (driver reloading maybe?)
EDIT: This is not the case, I can reproduce the audio by doing certain other non-camera actions that make noise.
EDIT: This is not the case, I can reproduce the audio by doing certain other non-camera actions that make noise.