Hi our server is running  
Minecraft 1.4.2 
Forge 6.0.1.341 
PlayerAPI Universal 1.1 
Smart Moving 11.5 
  
Our server has started having sever lag and will only clear up for about 30 mins after a reboot. Any help would be appreciated. Our server host keeps seeing the following errors in the log. 
  
  
012-11-17 11:27:13 [sEVERE] [ForgeModLoader] A critical server error occured handling a packet, kicking net.smart.moving.playerapi.NetServerHandler@64b17900 
java.lang.NullPointerException 
at cpw.mods.fml.common.modloader.ModLoaderConnectionHandler.connectionClosed(ModLoaderConnectionHandler.java:42) 
at cpw.mods.fml.common.network.NetworkRegistry.connectionClosed(NetworkRegistry.java:213) 
at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionClosed(FMLNetworkHandler.java:315) 
at bx.b(TcpConnection.java:449) 
at im.d(NetServerHandler.java:86) 
at in.b(NetworkListenThread.java:55) 
at hk.b(SourceFile:30) 
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:664) 
at hg.r(DedicatedServer.java:241) 
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:585) 
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:492) 
at fp.run(SourceFile:818)