For the past several days I have noticed that when I go to upload a wall and I reach the screen to set purity and add tags, the wall does not appear in the window unless I refresh the page.
I believe this is happening to others as evident by 208377, 200501, 200502, etc (these 3 have been reported, in one case by the up-loader himself). In these cases they may not have refreshed the page prior to the final upload.