I bought a couple of MMI navigation units from a well known forum member/contributor. When I tried to install these systems they appeared as stolen to Audi on the VAS systems. I contacted the member and after two or three emails to him he apologised and agreed to replace the units. Since I returned them to him he has ignored all contact for over a month. So now he has my money and the nav units. I have the name/address of his company etc and can inform the police that he is selling stolen goods. So I've decided to out this member to warn anyone else that may decide to deal with him, but not yet name him and give him a chance to put things right, either new units or a refund. Hopefully he will see this post and decide to do the right thing before I do.