Apologies if this was already addressed.
I decided just after submitting this photo:
http://www.summitpost.org/view_object.p ... _id=672022
that I liked another, very similar shot better for the purpose. I used the Edit feature to browse to and submit a new photo without changing the description. (It showed the same climber in the same location, later the same day. Nobody had voted on the photo yet.)
When I click through to the full-size photo, I see that the new one did upload, but the photo's "main page" and all the gallery thumbnails still show the "old" photo. (Yes, I told my browser to force-reload. I also tried in a different browser that uses a different cache directory.)
In case this is just a Rackspace issue that will resolve itself in a few minutes: The old photo is oriented vertically (portrait mode); the new one is horizontal (landscape mode). If you see the climber with his shirt on, you're seeing the new photo.