stsw on "W3 Total Cache not serving all images from cloudfront"

Hello

I'm trying to improve the delivery time of images on our site, I have succesfully set up W3 Total Cache with a CDN (cloudfront) and some images are being delivered through cloudfront but some are not.

The link is:

http://www.something-somewhere.com/newsite

The front images on the wall are being delivered through cloudfront:

http://d17upigqmuuulc.cloudfront.net/newsite/wp-content/uploads/featured_image/wall.png
http://d17upigqmuuulc.cloudfront.net/newsite/wp-content/uploads/featured_image/wall_002.png

Project detail images which are accessible by clicking on a project seem to still be delivered locally

http://www.something-somewhere.com/newsite/wp-content/uploads/2013/04/redlight-1.jpg
http://www.something-somewhere.com/newsite/wp-content/uploads/2013/04/redlight-2.jpg

I've enable debug to show in view source.

Any help on why these images are not coming through from cloudfront?

Thanks in advance

http://wordpress.org/extend/plugins/w3-total-cache/