img-over-content issues

Hi,
I’m afraid you must have a plugin keeping people who are not logged in from seeing your content. You can contact me with your login info if you’d like me to take a look: http://wpdecoder.com/contact/

Oh yes, I’ve seen this before. Sometimes if you have images uploaded and then change the formatting, it can do this. A couple things I suggest you try:
1) First, try deleting that Courgette gratin pic and reuploading. If that fixes that one, do the same for the others.

2)If that doesn’t work, try regenerating your thumbnails. You can use a pluginn like this: http://ww.wp.xz.cn/plugins/regenerate-thumbnails/

Hopefully one of these two will work for you. Good luck!