为什么IE / Fiddler会在Chrome和FF / Live HTTP标头中看到不同的Cookie设置/删除？

I have a partly inherited web application in PHP and after poking around with Fiddler I have a little more data than before. The problem I'm trying to solve is unwanted logouts on IE6/8 but not FF/Chrome. If a user clicks between different pages, the login data cookies vanish.I have a partly inherited web application in PH