At the moment, the “Forgot password?” link sits on top of the “Username” field. This has the unpleasant effect that pressing [Tab] after entering the username focuses the “Forgot password?” link instead of the “Password” field.
So it always happens to me that I enter my username, press [Tab], enter my password, press [Enter], then look back at the screen only to find out that now I’m prompted to enter my email address so I can reset my password. After a few seconds I realize what happened and I press the back button to start over.
Actually I don’t mind where the “Forgot password?” link sits, but in my opinion tabbing should always take you from the Username field to the Password field. It’s very common to type Username [Tab] Password [Enter].