Hmmm, well you need to do some background checking on your house, and just in case check out possible gas leaks, geological features(natural underground running water, limestone, etc..), radon checks,...there is something I'm missing here..., and check out if you have any kids running around doing occult stuff near. You know those darn kids and their messing up of rituals. Try that first, then if all else fails, mark it off as one hell of a night. Oh, and not to sure about the whole enhanced stuff afterwards.