Due to abrupt youTube security policy change, my youTube App doesnt work anymore :(
Possibly due to an exploit, youTube abruptly changed their crossdomain.xml file to only allow access from the youtube.com domain. As a result, YouTube developer API calls no longer work if the SWF exists in a non-youtube.com domain. You can read more on this on Joe's Blog here.
Woe is me... I think i'll try to port my app to the new BrightCove API that i came across today. Lets wait and watch :)
It seems Flickr did it too... seems like Death of open crossdomain.xmls. Read the post by Renaun Erickson