XML loading in a standalone SWF

Just curious…

When I publish a Flash app that loads my XML file from the internet and run it from the HTML file it works fine and loads successfully.

However, if the SWF is not embedded into the HTML file and I run the standalone SWF, the XML fails to load.

This isn’t a problem for me because I’m not ever going to need a standalone SWF loading my XML, but I’m just curious because I seem to remember doing this exact same thing before and having it load sucessfully in my standalone SWF.