MetaMan

I am having a very weird problem on one of my sites.

When I visit the website on HTTP: i get an "updated" image.
But then when i view the website on HTTPS: i get the "old" image.

This is even after is hit ctrl F5.

On top of it to double check the problem. I copied the url from the image. Pasted it HTTP: in one window and then pasted it HTTPS: in another window. And each window had a different image.

Anyone have any thoughts why HTTPS would be continually caching the "old" image and HTTP the "new image"?