Before:
XMLSocket goes and checks the sandbox security (crossdomain.xml) as all other security related flash things.

Now:
XMLSocket wants to check port 843 (default) for a security crossdomain file. This is NOT same file as the crossdomain that is on the web server port 80.

Solution:
After long searching and reading it’s really 2 things you need to do.
1.) The server must feed client with a special XMLSocket crossdomain file. Download the zip from http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html and read the article, could also be good to read http://www.adobe.com/devnet/flashplayer/articles/fplayer9_security.html so you know what is going on.
I don’t know so much about servers so on my ubuntu machine i just typed in the terminal.
./flashpolicyd.pl –file=../policyfile.xml –port=843

2.) Flash Client; make sure to run loadPolicyFile(“xmlsocket://mysite.com:843″) or change port number to what you have in #1. When it’s loaded it should all work.
It’s simple as that,,,

Why most people always write lite, I know this but not, This is how you doing it…. Flash Blogs, shape up. =)