For some reason, I created a user who is used for special use. I tested
it at xp sp2 machine and it logged in successfully. But after I logged
off this user, I could no longer log in back getting the error saying
"check password...etc..." and I know for sure the password is correct.
This user is not assigned to any group except Internet access group. I
wonder if it is related. Please advise!

Appreciate any response!!!