I have the same/similar problem with my images. When I go to my blog, some of my most recent uploaded images are not showing up. When I go into the Media Library, I see a link instead of a thumbnail image to click on. When I click on the link, then you can see the image. It isn’t allowing me to upload any new images either as when they are uploaded from my main server, they do not show up, nor do they show up with the image uploader on wordpress. My blog is http://www.babyswags.com/blog
Any suggestions on how to fix this? The other blogs I am running are not having issues so I am wondering if this is a template issue?