There are known issues with AppleShare 4.0.2 running on Power Macintosh computers and Empower security software.
First, the computer will lockup when the Empower screen saver mode comes on. This is a known and reproducible issue with Empower.
Second, Empower can restrict access to individual folders much like file sharing does. If a user tries to access one of these restricted folders while AppleShare is running, unusual problems of an unknown nature, may occur.
For security, Apple recommends that file servers be kept behind closed and/or locked doors. This should reduce the need for security software.