Gallery Shortcode calls Full Size image after name switch

I just notice something really weird and I was wondering if you guys ever heard of this happening? For some reason, the [gallery] of random post is pulling the full size images instead of the thumbnails into the gallery. Why would this happen?

All the uploads after the name switch seems fine. It’s only the old post that are affected, and it’s random ones.

Example:
Working normally: http://www.popwired.com/2009/04/diffa-denim/
Not working normally: http://www.popwired.com/2009/03/zac-efron-manly-lakers-game/

All the thumbnails are stored in its correct directory and the post meta key does exist for it in the database. I did a comparison of the two and found no difference.

I also noticed that on the non-working gallery, when you click on a thumbnail, it takes you to another page that is suppose to show the medium/full size image, but it doesn’t show anything. It’s blank, because if you look at the html source, you’ll notice that the width and height is reading =0.

I then went into the wordpress admin to view the images of the post that was uploaded and for some reason the full size dimension now reads 0 x 0.

Any clues?

FYI, I used css to make the images smaller to fit within its frame. It’s actually the large image scaled down and with around 7800 daily page views you can see where problems might arise, memory wise.