I wonder if this is a variation of the oft reported IE5 problem with recognizing document types. IE ignores (I think) content type and depends upon the 'pdf' extension. The extension gets mangled. To solve the problem, use 'a=b.pdf' as your extension name.
Another exceedingly annoying issue is the interaction between Acrobat 5 and IE5. If you allow Acrobat to do its thing in the IE 5 browser window, eventually the connection will break and you'll be looking at a blank IE screen. The problem is in the ActiveX version of Acrobat used when Acrobat is opened within the browser. To assure that this will not happen, I'd advise running the Adobe reader outside the browser - this can be done by adjusting Acrobat's properties: in Acrobat 5.0 Edit->preferences->General Select 'options' in the left column, make sure checkbox next to "Display PDF in Browser" is unchecked. TJ ----- Original Message ----- From: "Michael Heinen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, April 16, 2002 10:48 AM Subject: AW: PDF Plugin Launch > The disposition-type "attachment" says, that the display should not start > automatic but continegent upon some further action of the user. > > Try using disposition-type "inline" or dont set this header and use instead > of this only the "contentType" header > > Sample: > response.setHeader("Content-disposition", "inline; > filename=\"report.pdf\""); > or > response.setContentType("application/pdf"); > > Michael > > >