Two things come to mind. One is after you upload. About halfway down the page you should see the name of the picture with an extension like .jpeg. the title should be in blue. As long as you see that close the window and submit the post. The other thing is that the file size could be too big although it generally says that the upload failed I suspect its there and you arent seeing it. Try to upload one picture by replying to this and submitting a picture to. See if it works.