If you updated without backing up the /etc/ttys file, these customized features don't work as expected:
- Login and/or logout hooks
- Secure console in single-user mode
- Customized communication speed on the Xserve's serial port
The change made to the /etc/ttys file for 10.3.3 is to set the communication speed on the Xserve's serial port to 56 kbit/s.