Hi I have exactly the same problem, I was asked to sign up again but was told the account already exist,
i couldn't log in anyway with the password that i entered when signing up for the first time, so i asked for a password modification but when I entered the code, a message "empty" appeared, when i tried to check again it said there is a problem.
I tried to update tmy password 3 times, still not able to do it. It seems that there is an issue with the server.
I tried with FF and IE 6 either of them had pb.
You are not alone :-), but how sad i can't wait to see wha MS's Analytic tool can do...