http://facebook.com to get property LocaFacebook JS Error - Permission denied to get property Location.href from http://www.mysite.com

Simply loading the standard Facebook connect JS fram开发者_开发百科ework and getting the following error:

Permission denied for facebook.com to get property Location.href /www.mysite.com

The error happens on line 127 in the file : static.ak.connect.facebook.com/connect.php/en_US/js/Api/CanvasUtil/Connect/XFBML

Using FF 3.5.7 and Firebug 1.5.0

Is anyone else getting this error?

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It's an issue falsely reported by Firebug. Nothing to worry about.