Even my site is suffering from the same problem..
http://technobuz.com/feed/
Any Suggestion please.I deactived all my plugins and checked themes files the line is not there at all.
Yes it worked locally..I tried HTML5 Desktop notification example.I used the same browser (Chrome) to test locally as well as in the server..
But html5 page i created is not working .After i uploaded it to the server
