My company has purchased a secure certificate that covers all of our domain. We have other site under that main site, sometimes redirected via the headers in IIS, sometimes straight through http://ourdomain/theirsite.
Firefox doesn't care about all my hijinx, it correctly reads the certs, and checkout / secure CC processing occurs. IE7 pitches a fit and turns the page into a 404-esque page the first time, if the user reads and actually continues on (unlikely) then they get the red "insecure" bar, even though my cert is legit. Any ideas why?
I changed the site to always redirect to ourdomain/theirsite so the domain is even constant now, yet in ie7 I still get the "LOLZ NO" page.