I have a three websites on a LAMP server. As I developped them myself, the designs are very similar.

The general approach: a user logs in and a number of session variables are set. Next the user is redirected.
Part of the session variables are used to define which menu items will be displayed.

Two of these sites work in IE and FF. The third site only works in FF. If I display the session variables, they are OK before the redirection in both IE and FF and empty after the redirection (IE).

As the site works in FF, I assume that my php code is correct and that this is an IE issue. I however can't figure out what goes wrong.

Anybody any idea?

It's time to kick this one as I still have not found a solution.

Let me add that opera is also behaving correctly.

Can this be a security setting in IE?

Solved

The domain name has an underscore (asset_register.btd-techweb01). Remove the underscore and it works.

Symptoms occur with IE5.5 and IE6 according to reference below. It also occurs with IE7

References:
http://classicasp.aspfaq.com/general...les-stick.html
http://support.microsoft.com/default.aspx/kb/312461