Compare your placement with mine. I am using just one ad unit to have a better cpc. Here is the link where I placed my adsense ad unit. http://www.filibo.com/
Try it that way, but I would rather change it to blend in with the links on the right, like in between payper click and setting up ads....
the website sucks. a lot. it's blogspot. sucky theme. Ads everywhere!!! Yup, it's an MFA (Made For Adsense) site.