When I enable Authorize.net AIM, and I proceed to the Step 2 of checking out - the ?main_page=checkout_payment

I see the following problem:

credit card problem.png

Perhaps it is because even when I disable the Authorize.net AIM module, customers still see the option to pay by credit card

with authorizenet AIM disabled.png

Any suggestions. I am stumped and I used the developers toolkit to locate this issue to no avail.