ADsense on tags

I have a adsense plugin on my wesite, but it does not show the ads when a users get to my website through tags. For example:
http://hotfixes.edibra.com/tag/disable-ssh-iphone/
when a user visits that page though google, he does not get any ads at all on the content.
I have edited single.php, but seems that singe.php has nothing to do with the tags. Which file should I edit ???
Thank you in advance.