Only the support bot and Staff can see that blog selection that you make when starting a thread. We Volunteers can't so we have to ask for the link. I have viewed your blog using Firefox 6.0.2 and can see images on your front page. Have you compressed the images and presized them to fit into the post maximum displayed image width prior to uploading them?
On Depo Masthead the maximum displayed image width is: 300 on front page columns (resized automatically when wider). I'm thinking that it may be possible that if the images are presized rather than relying of the software to automatically resize them your issue might disappear, but I don't know that for sure.
In any event I do think you ought to report this come and go image display to Staff. Here’s the link http://en.support.wordpress.com/contact/ After you use the searchbox, under the search results, at the bottom of the page there will be a section that says “Have you found the answer to your question?” You can choose either “Yes I found the answer to my question.” or “No I didn’t find the answer to my question and I would like to contact support for help.” The no option will reveal the contact form.