Red X causes:
1.  The bandwidth limit has been reached for the host for the day.  Try again another day!
2.  Try right clicking on the red X then select "Show Picture".
3.  Right-click on the red X then select "Properties".  Highlight the URL for the picture, then copy and paste the URL into another browser window.
4.  The picture is no longer available.  Check the date of the original post, if it is not a recent posting, the owner may have removed the picture.

Hope this helps!