Ads showing in Debug mode only

Hello and thanks for developing this great plugin.
I’m testing it on my blog with W3 Total cache (Disk: basic mode and Minify disabled).
I’ve activated ads in posts only, top and bottom. The problem is that ads are shown only if I activade ad injection Debug Mode. If I disable it and Flush W3 cache, the ads don’t show anymore.
If I set it back to debuck, ads appear again.

Do you know why this happen?

Here’s a page to test: http://www.giacomo.sardelli.name/blog/2012/12/17/un-doppio-regalo-bilingue-the-maria-fuga-cooking-club/

http://ww.wp.xz.cn/extend/plugins/ad-injection/