>SWAG - could the defined MIME types be different on the two servers?
http://technet.microsoft.com/en-us/library/cc753281%28v=ws.10%29.aspxI will check on that. I did try to use the embed approach instead. That one is cleaner as it displays the document as is. However, I have the same reaction as before on that particular server. I wonder if in HTML5, there is something better than embed to include a PDF inline.