[squid-users] Help with a page cache thanks

Hello,

A page with its response header as:

(Status-Line) HTTP/1.1 200 OK
Cache-Control no-cache
Connection keep-alive
Content-Type text/html; charset=UTF-8
Date Mon, 14 Feb 2011 11:11:09 GMT
Expires Mon, 14 Feb 2011 11:11:08 GMT
Pragma No-cache
Server nginx/0.8.54
Transfer-Encoding chunked

The page is dynamic, different user should see different content.
But the URL is always the same.

Firefox/IE8/Chrome goes without problem.
But IE7 (and other IE below it I believe) have been caching this page,
for different people the see the same content.
Once they press "F5" to refresh the page all goes well.

Is this an IE problem? how to prevent the (broken?) IE caching it?

Thanks.

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