I have installed Responsive which I find a very nice and thorough theme.
When the posts are shown on the home page, their image is -of course- presented.
When I click on a category to see its contents, however, the posts are presented without their images!
I tried to check if I was missing some option and I saw that in Response -> Templates -> Archive -> Post Excerpts was turned to "on".
When I turned this option to off, I saw a mess ... The images appeared but they were outside their boxes and the image of the above post was hiding part of the post below.
I turned this option again back to on, and I am writing this post.