Since IE uses the protocol designation (https://) in the address line to drive the display of the lock symbol in the status bar, I have longed for IE 7 to display the status bar if the cursor is in a text box that will post securely.  Furthermore, why not provide thestatus bar lock and a balloon on hovering over a form region (or the submit button for a form) that will post securely.  Why not provide a visual overlay on submit buttons indicating security?  The balloon could contain details from the cert used to secure the post.  IE should provide a definitive indicator to the user for secure posts -- indicating the target domain for the post and the domain of the cert (in case they don't match)

end of brainstorm... please, just fix it for everyone!