I have the same problem. Every time I go to Google Docs it keeps making me choose a user, then I choose a user, then it doesn't let me in and makes me choose ag

I have the same problem. Every time I go to Google Docs it keeps making me choose a user, then I choose a user, then it doesn't let me in and makes me choose again. It does this even for the root subdomain. I end up having to open any Google Docs URL with a different browser where I only ever login with one account. One of the several accounts it always tries to use isn't even active any more, it's an expired Google Apps account from back when they started charging and it still always offers it even if I'm signed out.