File Size Missing In Uploads Please Respond

Noticed that the some of the newer submissions do not display the file size. Is this a site issue or a browser issue? I editted this and the edit did not stick so here goes again. I would really like to know if this is a site problem or a "Me" problem as it has been this way for over a month and happens both with IE and FF. There is no file size on any of the newer uploads to the site.