Journeyman Pictures has an interesting short video on the popular revival of exorcisms in the Catholic Church:http://www.youtube.com/watch?v=ErzgeAmio8c
As they explain they are training new priests for the job of exorcising and that the number of reported cases has been increasing.
Some time ago I had asked Malcolm on this forum whether or not in Tibetan medicine there was a common perception that cases of spirit provocations were increasing in recent times. He said that there definitely was.
Regardless of what you think about the actual phenomena, it is interesting nonetheless that this might be increasing.