I've had Xbox live for 4 years and I have never had this problem. Recently whenever I turn my Xbox on my account will for some reason log out of xbox live and will require me to put in my email and password. And that's not all. My password will keep reseting without my doing. After all of this I reset my password on my own and then once my password works I get a "Code: 80151015" and on the Xbox tech support it says that this code doesn't exist.