SSL certificate errors...

We recently added a new control/page to our app. Its nothing special, the code is less than 130 lines. But we have encountered a problem with our SSL certificate when trying to access it. Whenever we open it, it warns us that some of the content wasn't delivered through https. Now I opened up httpwatch(https://www.httpwatch.com/download/) a nice little problem to record how packets are being sent and it looks like everything was being sent through https. Now I tried opening the same page up in firefox and no error. We havent figured it out yet, but im willing to be it is a bug with IE.