martinibuster - 6:53 am on Jul 26, 2010 (gmt 0)
And found some unauthorised sites one of them is the below one.
translate.googleusercontent.com is the URL used when someone is viewing your content via the Googe Translation tool.
webcache.googleusercontent.com is the URL used when Google displays the cached version of your page. Those are both generally a legit display of your adsense ad.