I'm intrigued about what Kobra said about it loading painlessly in IE6 and https.
Kobra, did you get the hover in the secure area?
Finally, I have tested corner of trust, in fact, it is now installed and working in my site.
Working...except for IE6. When switching to the secure area, IE6 displays the dreaded warning about secure and non-secure items, do you want to continue?
I did not get a warning when selecting "login"

Now I still do not get a warning in IE BUT while the pop up works in IE when in the login screen "only" hovering over it produces a popup but with "Credentials are not available for this site"