Slow response without index.php

[eluser]mikertjones[/eluser]
Very many thanks for the responses so far.

I am not convinced it is Javascript related. Certainly I am using jQuery and when the control panel (home page) loads, a Jquery document ready function attaches the click event to each of the links on the page. Also, each of the popup windows itself loads some javascript.

The user has no way of affecting the url of any of the links and so I can't figure why removing the index.php from the address of the page that's already loaded (the control panel) should cause a difference in the load time of a popup window.

Does server side php (in codeigniter) use the $_SERVER['HTTP_REFERRER'] value in page requests? That's all that's different when a call to the popup is made.

The other odd thing is that I can't re-create their problem from my computers uisng IE6, IE7, Firefox or Safari. The users computers are part of a school network. Are there any aspects of a network structure that might impact on this.

The new window loads slow while the loaded page index.php is present but loads quicly if the user has removed the index.php from the already loaded page.

Any more thoughts?

Thank you

Mike