Redstone error? O.o

Anyone seen this in there console i cant figure out whats causing it, it gives the error then everyone is disconnected.

2011-02-08 16:03:35 [INFO] This server is running Craftbukkit version git-Bukkit-0.0.0-382-g026d9db-b297

Code:

2011-02-08 16:01:52 [SEVERE] Unexpected exception
java.lang.NullPointerException
    at net.minecraft.server.BlockNote.b(SourceFile:22)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:437)
    at net.minecraft.server.BlockRedstoneWire.h(BlockRedstoneWire.java:181)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:232)
    at net.minecraft.server.Chunk.a(Chunk.java:324)
    at net.minecraft.server.World.setTypeId(World.java:324)
    at net.minecraft.server.World.e(World.java:381)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:279)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:433)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:45)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:281)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:433)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:45)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:281)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:436)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:45)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:281)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:433)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:45)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:281)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:433)
    at net.minecraft.server.World.f(World.java:406)
    at net.minecraft.server.World.b(World.java:391)
    at net.minecraft.server.BlockRedstoneTorch.a(BlockRedstoneTorch.java:123)
    at net.minecraft.server.World.g(World.java:1524)
    at net.minecraft.server.World.f(World.java:1455)
    at net.minecraft.server.WorldServer.f(WorldServer.java:46)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:305)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:230)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:512)

--- merged: Feb 10, 2011 12:20 AM ---
One of my users said he was laying redstone wire as decoration on the floor then he got disconnected along with everyone else.