Nasty php session issue in IE6 & IE7

As discussed here
http://www.blog.lessrain.com/flash-nasty-xml-load-bug-in-internet-explorer/

if you are using https and calling sendandload in Flash to get variables using sessions IE6 and IE7 need to have the following headers

Immediately after session_start (), the following two lines are required:
header ("Cache-Control: cache, must-revalidate");
header ("Pragma: public");

Thanks canuckster and Adobe finally http://kb.adobe.com/selfservice/viewContent.do?externalId=fdc7b5c&sliceId=2