Several people have recently reported problems with shop banners switching between old and new images, I am now seeing similar things with the models overview:
Today I uploaded a new model, which has not appeared in "My Models" even after an hour (though I received the "ready for ordering" email with a link to it). In the meantime, I deleted a model (from helping another user yesterday). This took an unusually long time to disappear, and as I just now revisited the "My Models" page to see if my new upload had finally made it, I was greeted by the deleted model, obviously returned from the nether world. Something amiss in your cloud castle ?