My site will have an "Edit profile" page, just like facebook has.
Furthermore the *e-mail of the user serves also as the username.*So the user/e-mail is also the contact details of the user.
In the edit profile page I have 2 fieldsets, the one is with form inputs for personal data(name,last name) and the other is with contact details(e-mail,phone).
The question is if it is better that the e-mail(which is also the username) goes with the personal data and is reminded to the user that it is the username also, stay as it is or adopt a different solution which you might have to propose.
certainly that the e-mail is the username also makes me think twice the structure of the edit profile page.