Hi,
The problem always comes down to this, I have a policy file on my server which lets my flash to do what it wants and I retrieve that data. But most of the information one needs in an facebook app is from facebook.
My setup is Django/Python with flash. So when I call a url like http://apps.facebook.com/... it gives me a security error because apps.facebook.com does not give you a crossdomain.xml.
So either I use the fconnect or the Iframe or try some other thing. Currently I can't put my finger on that other thing.
Any ideas?