NOT sharing Sessions on network

[scraff]

Hello, I am using PHP and phpsession cookies for a login script that checks username and password for a control panel.

The people that log on are on different computers on a small nework which shares an internet connection through one centeral PC.

The problem is that if one person logs on one PC as PERSON1 then someone logs on a different PC as PERSON2, it changes everyone to PERSON2. I am guessing that this is because all the PCs share the IP address.

What is causeing this and how can it be fixed?

Thankyou

[Weedpacket]

Without seeing any code we're not in a position to tell (and no, the IP has nowt to do with it unless you're using the IP for user identification for some reason).

[scraff]

OK, this is my first page after submitting username and password and checking the password is correct.

<?php
session_start();
if ($username ==""){
}else{
if ($numR == 1) { 
  if ($Passwordcheck == 1){
   	 session_register("username");
  }
}else{
	session_destroy();
}
?>

This is what i use on each page

<?php
session_start();
session_register("username");

if(!$username){
print "<meta http-equiv=\"refresh\" content=\"0; URL=index.php\">";//this is just so that it goes tho the login page if not logged in.
}
?>

It all works fine, exept it logs in as different people.