I'm in Ubuntu 12.04. I'm already logged in to an Ubuntu One account. I'm trying to install software from the Ubuntu software center. It's asking me for my Ubuntu One login, and then rejecting it. (It does work to log me in to Ubuntu One on this computer, an Android phone, and a Windows 7 computer.) I've tried resetting my password via a "reset password" email link: I get a message that I'm unauthenticated. I've tried cutting and pasting the login code sent via email: the code is not recognized. I've tried creating a new account — something I don't really want to do — it tells me an account already exists for my email address. Help?