I have the same problem. I use Vista Home Premium and Office 2007. Clicking on "Open from Office Live" gives me 'Sign in to Office Live Beta'. It does not show any workspaces or options to sign out. Clicking on the sign in option gives me the message that I am logged in as user1 and I need to sign up for office live workspace. As I am actually logged in as user2 (and this is the user that the workspace is set up under), So I click "no" and then get the message about Office Live addin automatically signing me in as user2, offering me the chance to delete user2. I cancel this as I do not want this user ID to be removed - user2 is want I want to use.
I cannot see how I ever signed in as user1 in the first place, it is not listed as a network ID/password under User Accounts. How do I get the chance to delete user1?
Thanks.