external script stays in <defunct> state after executing

External script stays in <defunct> state after successfull executing. My configuration: OS: Debian Linux 3.0 Freeradius: 1.0.4 acct_users file: DEFAULT Acct-Status-Type == Stop Exec-Program = "/usr/local/sbin/testacct.php" Note that this problem was not in my old freeradius 1.0.1 installation in the machine with the same configuration.