Sessions

Hi all, I'm having a problem with sessions. I use PHP version 4.2.2. The project I'm working on, only uses the global variables, $_GET, $_POST and $_SESSION. When I store something in the $_SESSION variable, everything goes well. I can print the contents of this array with print_r, and every variable I stored is there. But when I leave the page with the header(...) directive (or any other way), the session is empty! The session file contains no data (so it is created!), the $_SESSION variable is empty... Some extra information: - I've tried this on PHP 4.1.2, and that works OK - I've tried output_buffering (on and off) - I've tried registered_globals (on and off) - I've tried using "session_write_close()" before leaving the page - I've checked the "session_start()" statement (Yes, it's there :-) ) I hope someone can help me with this... Thanks in advance, Erwin