The ads module still does not work properly on MANY themes, and display the ads code instead of the ads itself.
I have mentionned that many times, and suggested to have a look on other ads plugin working fine like ads manager or others.
That means the ads module can be used only on very few themes.
Last example : smell like facebook :
There MUST be a filter to NOT display ads on home pages OR something that includes the ads code not in the content of posts.