OMG! I'd read folks talking about it, but only just now experienced it for myself. I had yet to die, and was making my way through Chapter 3 (I believe it is). I got pretty well into the chapter, and then saved and exited right at the little-kid piano puzzle. When I came back, I was right where I left off -- about 40 minutes in. So, I made my way further into the chapter, went out into some rainy area, flying heads start attacking me, I kill them and move on. More flying heads attack me, I die, the game asks me if I want to restart the chapter or quit. I quit. When I look at my save file it is now missing about 30 minutes of gameplay and I have to restart the entire chapter. Who the hell thought this was a good idea?! Wow! I doubt I'll be finishing this game. Horrible, horrible production decision!