Yes there seems to be a link.. We've had this discussion many times in these forums as so many of us have Autism or Aspergers in our families or have children with this myself included. My father (and myself) also have Aspergers and its his side of the family the ME/CFS is also running in.
Whether its a certain genetic predisposition which is to both ME/CFS/Autism or the issues with detox or methylation which are causing the link.. who knows but one of those things seems to be.