Website error message after upgrade

Here is a very silly question from my end. I was not sure if this error was just for me or it happens to others also.
Grooveshark is an Online music search Engine, music streaming service and music recommendation web software application. This website allows users to search for their wanted music, it allows you to upload as well as play it online.
I usually like this website and keep playing online songs but somehow after upgrading my PC from Win XP SP3 to Windows 7 I started getting this message.
I am trying to play from popular songs list and I get this on my Explorer window. Is this common to everyone or is this something happening because of my upgrade? Any help on this would be appreciated.
