Yup. He keeps changing his name and IP address and coming back, but we almost always catch the post in a few minutes and delete it. I had fun late one evening when he posted, I deleted, he posted, I deleted, and this went on for about six times. I pointed out that it was quicker and less effort to delete a post than it was to enter it. He finally gave up for the evening, but he keeps forgetting and coming back. He apparently hasn’t heard the statement that repeating something that doesn’t work is a sign of mental illness. 
Occam