Gmail Notifier No Longer Signs In Automatically?

Gmeail notifier, upon the boot of windows 7, the notifier would automatically sign in. the username and passwsord, is stored on the windows credentials, and so would log in by itself.as far as i know, it has nothing to do with internet explorer, as internet explorer doesnt even open for this to happen. it used to log in itself, but recently hasnt been. the windows security lon-in box opens on ever boot, and sits in the top left hand corner on the screen. the details are already in the username and password entry field. but will just sit there untill i click the 'ok' button.i know its not major, but msn sings in itslef, and gmail notifier used too, its just a little strange. i havent changed any registry fields, or deleted any cookies etc.