I'm playing on a server where the same problem occurs. It works fine, but suddenly at some point it crashes to a bug report. It happens to all players EXCEPT to those who are currently in Nether. It arouses our curiosity I must admit. When everyone wants to join again, it turns out that some players receive various Bad Packets or the thing which I attach to this post, and additionaly, when an "infected" player tries to connect, he causes everyone to get the same InternalException:java.io.IOExecption Resseting a servers helps, but that solution is temporary.
We're using Bukkit 1.4.2 Beta Build. I've found comments on mojang.atlassian.net that Beacons might be the source of this issue, however, I highly doubt it.
I hope MC/Bukkit will be fixed in upcoming version ASAP.
Pav Salco
I'm playing on a server where the same problem occurs. It works fine, but suddenly at some point it crashes to a bug report. It happens to all players EXCEPT to those who are currently in Nether. It arouses our curiosity I must admit. When everyone wants to join again, it turns out that some players receive various Bad Packets or the thing which I attach to this post, and additionaly, when an "infected" player tries to connect, he causes everyone to get the same InternalException:java.io.IOExecption
Resseting a servers helps, but that solution is temporary.
We're using Bukkit 1.4.2 Beta Build. I've found comments on mojang.atlassian.net that Beacons might be the source of this issue, however, I highly doubt it.
I hope MC/Bukkit will be fixed in upcoming version ASAP.