I can see that you've used the Gallery post format as well as inserting images with a one-column, full width Gallery in your post here http://linewestring.com/2012/11/05/italienska-landsbygden/
But something is definitely wrong on the front page. It's like the your theme Manifest isn't resizing your images to thumbnail images for the frontpage display as they should and that is causing the images to overlap one on top of the other or it isn't respecting the one-column full size image settings.
I'm going to tag this for Staff assistance. Because it is the weekend, it may take a little while for someone to get back to you. Please be patient.