> Sounds strange. Do you have anything else modifying the HTTP response > headers in front of your web servers, for example, a load-balancer? Just in case you have an F5 BIG-IP WebAccelerator, there is a known issue regarding this (needs login):- https://support.f5.com/kb/en-us/solutions/public/9000/600/sol9671.html SOL9671: The BIG-IP WebAccelerator may insert an HTTP Cache-Control: no-cache header into a response when an existing Cache-Control header is not present Known Issue Updated Date: 12/28/2009 This is the result of a known issue. The BIG-IP WebAccelerator inserts the HTTP Cache-Control: no-cache header into a response. This behavior occurs when the requested object matches an acceleration policy node with client cache settings configured with the Do not change option selected, and the response from the origin web server (OWS) does not have an existing HTTP Cache-Control header. Note: The BIG-IP WebAccelerator inserts the HTTP Cache-Control: no-cache header into a response regardless of whether the Always proxy request for this node option is selected. When the HTTP Cache-Control: no-cache header is inserted by the BIG-IP WebAccelerator, Internet Explorer 6 browser clients may be unable to display objects with an external application. Note: For information about this issue, refer to SOL9603: Microsoft Office documents may not open or save properly when accessed through a BIG-IP WebAccelerator using Internet Explorer 6. Note: This behavior was introduced in Hotfix-BIG-IP-9.4.5-HF2 for BIG-IP WebAccelerator version 9.4.5 to address caching issues with downstream caches. [...] Cheers, Phil. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
|