[Build #953 BUG-Warning]Furnace.event

Hello, i just create this topic to inform devs more.

i copy this here :

i've too i know the problem, it's with the furnace burn event/entity ou sth with furnaces, which get an error "Null pointer exception" in Builds after the 953. This error may corrupt chunks signs and chests, or sth like that. Must be reported to devs.

The bug with furnaces (i think) delete all signs in the chunk with the furnace AND delete all stuff from chests !

This bug have appeard on my server just after this :

Code:

2011-07-05 19:27:31 [SEVERE] java.lang.NullPointerException
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.BlockFurnace.a(SourceFile:117)
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.TileEntityFurnace.g_(TileEntityFurnace.java:179)
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.World.cleanUp(World.java:1124)
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:447)
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
2011-07-05 19:27:31 [SEVERE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
2011-07-05 19:27:31 [SEVERE] Unexpected exception
java.lang.NullPointerException
    at net.minecraft.server.BlockFurnace.a(SourceFile:117)
    at net.minecraft.server.TileEntityFurnace.g_(TileEntityFurnace.java:179)
    at net.minecraft.server.World.cleanUp(World.java:1124)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:447)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

Hope this post will be seen, i change my version to 952, it don't have this bug

It's craftbukkit or a plugin, i don't know... i think it's craftbukkit build BUT...