I am having the same issue.. add the line roomProps.instancekey = 'room2'; in my case it is room1 and room2 for my test. you can go to http://thegiide.com/oovoo2.html for room1 and http://igiide.com/oovoo3.html for room 2.. problem is these should be different rooms, they are not. when someone logs into room1 and someone logs into room2 they are talking to each other NOT waiting for someone else to log into there room respectivly. below is how my script looks, you have to change the room to what room you wish.. So please tell me what to do. I have 101 instances to use and so far cannot get but 1 to ever work.
<script type="text/javascript" src="http://videocallroom.oovoo.com/oovoomelink/codelib/oovoorooms.js"></script>
<script src='http://java.com/js/deployJava.js'></script>
<script type='text/javascript'>
roomProps.roomID = '69D1B0B637FE2CFCE04400144F7E8E22';
roomProps.instancekey = 'room2';
roomProps.width = '640';
roomProps.height = '350';
roomProps.backgroundColor = '#000000';
roomProps.captionText = '';
roomProps.captionColor = '#FFFFFF';
var myRoom=CreateRoom();
</script>