We found a weird IE6 bug in Fright Catalog and YumDrop today.  Turns out, when in the checkout process, IE6 would display a message to the user that they were navigating from a secure page to an insecure page.  Firefox, IE7, and Camino wouldn’t display any notification message at all.  The IE6 warning was totally bogus, since the resulting page was definitely secure (little gold lock, no messages, etc.).  For a while, I thought it was a bug in IE6, but the more I thought about it, that didn’t make much sense. 

That’s when I discovered that the notification only came up on a PostBack on a checkout page, not when the page first loaded.  So, knowing that we manage our secure pages using what we call a Redirect Manager, I took a look at that.  After some digging, I realized I was kind of barking up the wrong tree, and the real issue was the lack of a trailing slash on the URL.  This is something that we can either fix in our redirect or in the Secure Redirect module we use.  What I found really interesting though, is that this wasn’t an issue in Firefox, Camino, or IE7.