today i got a good theme for drupal and it's very good for adsense,it's more CPR! Dark and Green,it's simple and good speed.if you use drupal and Adsense,please try. you just need edit the file page.tpl.php let's all what you need to do. demo：http://www.freeprintable.cn/ download：http://www.freeprintable.cn/download/freeprintable_cn.tar.gz
its a tad dark but its about time someone posted a Drupal theme. It has been all wordpress over here.
I actually like the look of dark themes and they've converted well into clicks for me. The only problem I have with the laughingsquid site is that it takes forever to load. A lot of people won't wait, they'll just close the window - I did.
I thought the max number of Ads allowed on one page was 3? You might want to look into that if you don't want to risk losing your Adsense account.
you probably have it in your cache, so it doesn't need to load the graphics. Others might not think it's that slow - slow is subjective, but I don't like to wait even 15 seconds for a site unless I know the site and know it's worth waiting for.