Setting cookie very broken! Please help!

I've set up a new machine in a production environment to roll over an existing PHP script onto. Unfortunately, I'm running into a strange error: I have a login form, using fields named 'username' and 'password'. These are also used as variables. Using IE, the cookie never shows up as I would expect it to in the cookies directory. Additionally, I can't login as the variables are returned as null values to the script. Even stranger...I made a test.php that just echoes $username. I call it with ?username=test, and it works. Then I try the script that sets cookies, and it doesn't work. Then I go back to the same test.php request, and it doesn't show the value I passed to it (though it will show ones of other names that I didn't try to set in a cookie)! I know the code is valid, as it's working fine on 2 other production machines. I had PHP compiled into Apache, and just rebuilt both using APXS...same results. This is the code that I'm passing $username to, that totally screws things up, but works on other machines: if ($username != null) { $time = mktime()+3600; $date = gmdate("D, d-M-Y H:i:s", ($time)); header ('Set-Cookie: username='.$username.'; expires='.$date.' GMT; path=/; domain='.$SERVER_ADDR); } Restarting IE makes the test.php page work again...nothing else. Please, if anybody could assist or ask me for any other information required to diagnose, I would be very thankful. I need to get this working ASAP, and have been fighting it to no avail for the past few hours. -- Casey Allen Shobe cshobe@softhome.net 'Why do people with closed minds always open their mouths?'