I tried searching, but can't find any answers.

I have some AS3 code that reads multiple xml files. On a Mac it runs fine. On a PC it runs in firefox and chrome, but not in IE9. It loads and hangs. The code is rather complex, so I'd rather avoid posting it. I'm just wondering if people have had this happen to them, and what the issue was so I can get some ideas of where to start looking?

Thanks