>Hi Eric,
>
>I've run into this using IE 5. I'm not sure what caused it, but it is evidently no longer a problem in IE 6, or at least in IE 6 SP1. I'm basing this comment on casual observation, not serious testing, but it has proven to be true on two different machines, one running Win98SE and one Win2K Pro.
>
>-Rick

The problem is IE does not respect browser datatype standards and ignores certain types and decides what you really want to happen for you since the MS engineers know better than everyone else. Sound familiar?

Content-type: application/pdf
Content-disposition: inline

This should deliver a PDF into the browser as Netscape does without being pushed. IE however does not deliver the stream unless refresh every time you visit the page is turned on. Otherwise, you must push F5 to get IE to realize this is dynamic 3rd party content.

This issue also goes to the many security issues with IE as it is easy to fool IE into thinking that certain content is one thing but is another.