In my experience this relates to an authentication issue.
Firefox/Mozilla trys to be smart about page components that it grabs,
and if it is trying to get an image and the MIME type is not an image
then they abort. I’ve had the same issue with style sheets and
that things turn out right.
To see if this is the issue:
Check to see what the Type is.
If the type is not image/gif then it is likely that your auth mechanism
C&C Computer Operations Software Support Group
Paul Crossman wrote: