What exactly do you mean by "blank". The example you have given (8ffac2c.jpg) is a .jpg/picture file. If you double click on the file, does it open and show a "blank" picture, or does it not open at all? Where did you get this picture file? Can you open .jpg files that come from your own hard drive?
Please check this Internet Explorer setting: Click on Start-Settings-Control Panel, then double click on the "Internet Options" icon. When that loads, click on the "Advanced" tab, then scroll to the "Multimedia" section and place a CHECK mark in the "Show Pictures" box and UNCHECK "Show image download placeholders". Click on "Apply", OK, etc.
Websites don't have "attachments", but you can download files from them, or you can "view" pictures that are there. What exactly is happening at the webistes? Are there "Red X's" in the upper corner of the embedded picture? Something else?
We need a little clearer idea of what you're asking, please.
example "8ffac2c.jpg". This happens in e-mails and also various sites that I visit.
I have Windows 98 with Outlook Express 6, and my Security level is set at Medium.