Adsense is not working

[ben_erhan]

Hi friends,

in my site and forum

http://www.uydukurdu.com/index2.htm

google adsense is not shown.

If I add the same code another site I can see.
How can I solve the problem?
Why can not I see in my page?

Adsense code:

   <script type="text/javascript"><!--
google_ad_client = "pub-7226695919312106";
google_ad_width = 728;
google_ad_height = 90;
google_ad_format = "728x90_as";
google_ad_type = "text_image";
google_ad_channel ="";
//--></script>
<script type="text/javascript"
  src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>