Re:Mozilla handles it correctly (Score 2)

That page must not reproduce the bug in question (or maybe one of us is confused), but with IE-5.50, I get a warning that "The security certificate was not issued by a company [I] have chosen to trust." Then, I have to click proceed, after seeing the little yellow triangle.

Maybe this isn't the same bug, but if it is, then my non-updated IE is definitely not affected.