camera troubles

[Mudbill]

I've never had this issue on my iMac in Amnesia, and although I haven't tested Penumbra too much on it, I still can't recall such a thing happening.

Does the camera just not work? How can you not look up? Is it like the mouse pointer stops at the top of the screen, as if it isn't stuck in the middle?

How's your system? Is this on Steam? Are you running fullscreen, and if so, does it still happen in windowed? (Actually I don't remember if Penumbra has a windowed mode.)