I have such a problem...
In my first file, I used:
session_start();
session_register("username");
session_register("password");
echo "<meta http-equiv='Refresh' content='0; URL=secondfile.php?PHPSESSID=<?php echo $PHPSESSID;?>'>";
to register the two varaibles: $username and $password.
The secondfile.php tried to ouput the two variables, but nothing show up...
In older version php, I do not meet such a problem. I am now using 4.2.2 PHP.
Thanks for your help.