Reader X doesn't display Pdf stream if response contains header "Cache-Control: no-store, no-cache"

Hi all,
I work on a web application that, among others, generates Pdf documents. It renders them directly within the IE window by "streaming" the content of the Pdf in the response output stream. Note that we also add the header "Cache-Control", "no-store, no-cache, must-revalidate,post-check=0, pre-check=0" to the response.
Everything was fine with previous version of reader but since I installed Adobe reader X the content of the Pdf is not showing any more in my browser.
Here is what I already investigated:
- if I use another machine with an "older" Reader version, it works. If I save the displayed Pdf and try to open it on the machine where X is installed  it works
- if I remove the the Cache-Control header, then it works with reader X installation
Do you have any idea what changed between version 9 and X that could lead to this issue ?
To ease diagnostic I created a sandbox environment to reproduce the problem, you can go to the following address to see what's happening (or not in case you have version X installed)
With the Cache-Control header: http://readerxissue.appspot.com
Without the Cache-Control header: http://readerxissue.appspot.com/enableCache.html
I must confess that I am a bit stuck and I wonder if some of you could help.
Thanks a lot
Regards
Vincent

Hello,
We have semiliar problems in sweden with Adobe Reader X 10.1 Swe and Internet Explorer 8.0 with streamed PDF files.
We had some issues and got them resolved by the following
Upgraded to Adobe Reader 10.1.2.45 Eng
- Print Issue:http://helpx.adobe.com/acrobat/kb/pdf-wont-print-reader-10.html
- Grey box in Internet explorer: http://helpx.adobe.com/acrobat/kb/pdf-opens-grey-screen-browser.html
- Add site as trusted: Edit-> Preferences, unbox Enable Enhanced Security + add the host/url to site that is whitelisted to send pdf files
(the Automaticly trust sites from mu Win OS security zones doesnt work for us)
The thing is we run MUI pack on our Citrix servers and want Adobe Reader in Swe but it havent been translated yet...
So we have to wait for the swedish release on Adobe Reader X 10.1.2
Thanks,
Tony Van Der Haagen
IT-Mästaren
Sweden

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