Started having this issue today. No windows updates were installed since yesterday (Win8, 64). Can't stay in a server for more than about 15 seconds and cannot interact with chests and pressure plates. Can I do anything or is this server-side? What's this "resolved as invalid"? Is there no support for this issue?
Still getting this problem with idle timeout=0. Happens randomly and not very often but can keep me from playing for as long as two days, both in snapshots and 1.7.4. Problems are as everybody else stated: log in for 10-20 seconds, can't interact with chests and pressure plates, for instance, then disconnect.