The password used to log in to comcast to read email. I never save it. Always sign out. Today, I login, and sign out. Go back in and now the password stays there permanently. Why? How do I make it go away without chaning it again?
Try clearing out your browser's cache/browsing history. When you have done that, close out the browser and re-start it in a fresh session. Also, do you have your browser set to remember passwords?