Not all images are displayed in Windows Mail received emails.

I'm using Windows Mail, Windows Vista 64bit and Eset smart security.

When I receive certain emails, mainly marketing emails from companies, not all images are displayed. Although some of the images in the email are displayed perfectly, others are just an empty box with a red X. On one particular email when I hovered my cursor over the box with the red x it showed it as a spacer. The same sometimes happens with company logos.

I do have images blocked in options so that they don't download immediately, but even after I've clicked on "click here to download images" at the top of the email, not all images are displayed in some emails whilst others display perfectly.

I've tried everything I can think of in the  Mail options menu and nothing seems to work. If I opt to view the email online, everything displays perfectly.

Please help.