On the login page, the tab focus goes from username to login button to password. So, you've got to tab twice after entering your username to enter your password, then shift-tab to get back to the login button. The focus should go username, then password, then login button.
This seems to work for me when using Netscape Communicator 4.74. Typing in the username and then tabbing takes me to the password field. What browser are you using to cause this to occur?
I'm using Internet Explorer 5.0 on NT4 and/or Windows 2000 (not by choice).
Ok, I have confirmed this to act as you reported using Internet Explorer 5.01 and Netscape Navigator 4.74 for Windows. But wierdly it acts differently using Netscape 4.74 for Linux. There is any special HTML on that page making it act in a specific way so I imagine it is just based on the order the widgets are drawn when rendering the page between the different architectures. I will look into the HTML standard and see if there is anything that can be added to make the behaviour more consistent across OS's.
This should be different now. Please reopen this bug if it is not satisfactory.