What you are experiencing is with Canonical SSO our openid provider so i am reassigning this bug.
Ubuntu One relies solely on the SSO for email addresses and account information.
We also do not provide a way for you to link two SSO accounts to a single Ubuntu One subscription.
Note also that using Ubuntu One's gnome client with two accounts on the same machine is not supported.
What you are experiencing is with Canonical SSO our openid provider so i am reassigning this bug.
Ubuntu One relies solely on the SSO for email addresses and account information.
We also do not provide a way for you to link two SSO accounts to a single Ubuntu One subscription.
Note also that using Ubuntu One's gnome client with two accounts on the same machine is not supported.