"SecurityException: No valid crossdomain" even though the webplayer didn't even try to get the crossdomain policy request.

I did all the necessary steps:
1 - I have a game hosted on server1;
2 - The highscores services are on server2;
3 - I setup a python policy request server on port 843;
4 - I tested the server through telnet. It works as expected;
5 - Just in case, there is a crossdomain.xml on server2.com/crossdomain.xml. It was uploaded as ASCII;
6 - The game starts, it runs this first, just in case: Security.PrefetchSocketPolicy("server-2-ip", 843); I can see that it works by looking at the packets through Wireshark;
7 - I send a WWW get request to see if it works: WWW wc = new WWW("http://server2.com/crossdomain.xml"); yield return wc; Debug.Log(wc.text); It does.

HOWEVER, when I try to send a WWWForm, the Player outputs this to the log:

 SecurityException: No valid crossdomain policy available to allow access
   at (wrapper managed-to-native) UnityEngine.WWW:get_bytes ()
   at UnityEngine.WWW.get_text () [0x00000] in <filename unknown>:0 
   at ScoreManager+<GetScoresByIp>c__IteratorD.MoveNext () [0x00000] in <filename unknown>:0 

Then I look at the packets sent. It didn't send any! What the hell. It didn't even check for a cross domain policy file anywhere. I looked everywhere to see if I was doing something wrong. But everything seems fine.

This is how I send (well, it actually never sends to any server at all) the post data:

 WWWForm data = new WWWForm();
 data.AddField("key", this.c);
 var ip = "0.0.0.0";
 var jdata = string.Format("{{ \"action\" : \"post_score\", \"ip\" : \"{0}\", \"scoredata\" : {{ \"name\" : \"{1}\", \"score\" : {2}, \"userdata\" : \"{3}\" }} }}", ip, name, score, userdata);
 data.AddField("json", EncryptString(jdata, this.a, this.b));
 WWW wc = new WWW("http://server2.com/post.php", data);
 yield return wc;
 JsonReader reader = new JsonReader();
 reader.Read(wc.text);
 JsonElement elmt = reader.Content;

Is there anything wrong with this? Is this a bug?