More unification of code. SIG HUP is now functional on multiport mode under Single and Fork Mode. No functionality is lost under PreFork, but HUP'ing results in seg fault. More unified Signal handling, removal of duplicate code. This allows for serialization to be done on a wider range of machines.
Flock is more bulletproof, but pipe is more portable.
Thanks to Bennett Todd for sample code. This allows parent to shutdown children properly. Up to this point many revisions, bug fixes and optimizations had been made. Up to this point, much thought and research had gone into the server.