Attachment Page showing Header version of image

I’m not really certain what is going on. No matter what theme I apply to my site the header version of the image (the one WordPress uses as the header if you select a featured image) is showing on my attachment page in place of the full sized image. Even when I tried using the Twenty Ten theme. Is there anything in the code that I need to be aware of? What would be causing this?

It works just fine on the copy of WordPress running on my desktop, only the live version is giving me the issue.

I use Firefox 3.6.10 and I looked over in IE 8.0 (I don’t remember upgrading anyway). The problem exist in both browsers.

Also, it’s only with the images I recently uploaded, there were 106. Should I re-upload? I would like to figure this out so there are no future problems? Another thing I forgot to mention is that they are all attached to a page rather than a post. Does that make a difference?

I’ve tried re-uploading one of the image today and it was the same thing, even after I attached it to a post. So it happens to be with all the new images I upload to my site.

Please let me know if you need anything clarified, and thanks in advance to anyone with any knowledge.

Example: http://johannasplace.com/photo-albums/simple-and-delicious-apple-pie/attachment/108/