Theres definately a number of issues you need to address. Personally i dont like having the Auth communicating with the Game server, there isnt actually any need for it. I noticed that you cant actually use this source at all at the moment, its impossible to login, so you cant really test anything sadly.
This region:
#region Initialize, Keys
In the packetrefer, needs to be removed at some stage, thats going to add significant latency everytime a packet is received, any splitting of any sort should occur in the sockethandler, and you need to do it in as little effort as possible.
All in all, its alright, its good to see that people are trying to create servers from scratch, i think youve got a long way to go yet.
But dont get down hearted by any comments here, my current 4267 source is technically version 5.0 of my original cofusion source (released here under the name cofuture), and ive never actually had more than 4/5 people online on any of my sources, theres always plenty of room for improvement, just remember to draw a line at some point.