Dave, try posting a picture in this thread. First, use "Post quick reply" and then use the picture icon between the paperclip icon and left-justified paragraph icon, above the box you type your reply in.

Then, do a another post by clicking "Go Advanced" reply option and use the "Manage attachments" button below the text box to add your picture. See if both are broke. I THINK this is a browser issue on your end, not sure. You MIGHT try refreshing the page after the page loads after your post. I've had this happen to me as well - others see the picture but I don't.