"Is IE saving it and letting you log in?"...yes. I have to type both in on the other 2. I don't remember what password IE is saving.
so is this a password issue? You don't remember your password? If so thats an easy fix
I can try getting another password and see what happens. If I can remember what password IE is saving, I might try that first. As of now, my IE password is a bunch of periods. I don't know if this is related, but IE is the only place I can watch YouTube commercial free.