I took delivery of my X about a week ago and overall it's amazing but I've had several annoyances with the center display. First is is the tune-in login, in the app settings I enter my username and password and it tells me that its unable to log me in. The second one has been the internet browser. When I try to login to my Ameritrade account it would start to load then show a grey screen telling me to check my connection. Finally how slow and laggy the display can be but I expected this because of my test drives in the model S.