Does the folder show to be empty? If so and nothing is seen how do you know it's there? Temporary internet file can be emptied by clicking tools, then deleting cookies and then files including offline content. If you have done this did you click settings, then show files? If so what did you see? If nothing click objects and look there, you will have option of deleting those objects but be very carefull what you delete or you will need to reinstall.