Why I can't show adsense ads?

LOL, Solved, it seems the new format takes a few minutes to show up ads


I didn't generate adsense ads code for a while, it seems the adsense codes changed.

Well,the new format codes doesn't show any ad on my site, while the old formate shows fine. What's the problem?

1. Old format: Adsense ads shows!

<script type="text/javascript"><!--
google_ad_client = "pub-";
google_ad_width = 120;
google_ad_height = 90;
google_ad_format = "120x90_0ads_al_s";
google_color_border = "ffffff";
google_color_bg = "ffffff";
google_color_link = "4bb4f1";
google_color_text = "000000";
google_color_url = "000000";
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

2. New format: Adsense ads Doesn't show!

<script type="text/javascript"><!--
google_ad_client = "pub-";
//200x90, created 02/12/07
google_ad_slot = "xxxxxxxxxx";
google_ad_width = 200;
google_ad_height = 90;
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

 

Why don't you use the old format?

 

How to generate the old format from Adsense.com? I can only generate the new format which only shows "can't find the url" error. Or should I wait for hours to get the ads to show up? why old format works immediately?

Messed up.

Thanks

 

LOL, Solved, it seems the new format takes a few minutes to show up ads

 

All format of ads : https://www.google.com/adsense/stat...?sourceid=aso&subid=ww-ww-et-asui&medium=link

 

Its clearly mentioned there that it may take about 10 minutes to show up.