when i join my server, there is a long period of server lag where opening chests and the like does not do anything. after some time, the client will either catch up to the server, up go back in time. after 5 min or so, the client stops talking to the server and i get kicked. minecraft returns the message as above: Internal Exception: io.netty.handler.timeout.ReadTimeoutException under the Connection Lost text. Neither of these issues happened before updating to the prerelease.

Edit: also after getting the Internal Exception, i have to restart minecraft before being able to reconnect to the server