Bukkit/CraftBukkit — comment on commit 792fe3e8c611f7a8aa0390c4d2d384931b56e43d
File:  line 0
By ZachBora:

@khobbits I was not aware of this problem.
So if I manually send a packet of :
server.getHandle().sendAll(new Packet201PlayerInfo(oldName, false, 9999));
server.getHandle().sendAll(new Packet201PlayerInfo(name, true, getHandle().ping));

I can crash clients? Sounds like a minecraft bug :(