problema di warnign in locale con PHP 4.3.2

[pmi]

mi dite da cosa dipende o come lo posso risolvere

Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

[marketto]

nn devi usare session_register per registrare le variabili di sessione, ma bensì $_SESSION['pippo']="valore di pippo";