I had my takedown surgery in July 2010 and developed my first obstruction in November 2011 followed by one more the next month and three obstructions in a two week period this past February. My internist thought the obstructions were caused by adhesions and I immediately started seeing a physical therapist who specializes in a technique, that is supposed to break up scar tissue. I have not had any obstructions since I started the therapy and my diet has been unrestricted for the past few months (I eat nuts every day).
The therapy may not work for everyone, but I think it is worth a shot.