[Game freezes when I go near my base]

I opened the console and this is what it showed me.

2014-09-17 17:18:37 [WARNING] [Minecraft-Client] Memory connection overburdened; after processing 2500 packets, we still have 51769 to go!

[b#439]  2014-09-17 17:18:37 [iNFO] [Minecraft-Server] Saving and pausing game...

[b#439]  2014-09-17 17:18:37 [iNFO] [Minecraft-Server] Saving chunks for level 'A Hole New World'/Overworld

[b#439]  2014-09-17 17:18:38 [sEVERE] [ForgeModLoader] An Entity type net.minecraft.entity.passive.EntityVillager has thrown an exception trying to write state. It will not persist. Report this to the mod author

[b#439]  net.minecraft.util.ReportedException: Saving entity NBT

[b#439]   at net.minecraft.entity.Entity.func_70109_d(Entity.java:1605)

[b#439]   at net.minecraft.entity.Entity.func_70039_c(Entity.java:1545)

[b#439]   at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75820_a(AnvilChunkLoader.java:292)

[b#439]   at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75816_a(AnvilChunkLoader.java:127)

[b#439]   at net.minecraft.world.gen.ChunkProviderServer.func_73242_b(ChunkProviderServer.java:232)

[b#439]   at net.minecraft.world.gen.ChunkProviderServer.func_73151_a(ChunkProviderServer.java:284)

[b#439]   at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:899)

[b#439]   at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:360)

[b#439]   at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:124)

[b#439]   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)

[b#439]   at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

[b#439]  Caused by: java.lang.NullPointerException

[b#439]   at net.minecraft.village.MerchantRecipe.func_77395_g(SourceFile:107)

[b#439]   at net.minecraft.village.MerchantRecipeList.func_77202_a(SourceFile:127)

[b#439]   at net.minecraft.entity.passive.EntityVillager.func_70014_b(EntityVillager.java:241)

[b#439]   at net.minecraft.entity.Entity.func_70109_d(Entity.java:1588)

[b#439]   ... 10 more

[Game freezes when I go near my base]

Thanks guys!

[How to deal with massive amounts of liquid?]

If you get mekanism, the dynamic tank from that hold loads quite cheaply.

[Game freezes when I go near my base]

Whenever I go near my base, Minecraft almost freezes completely and I cannot do anything.

It took me 20 minutes to move less than 5 blocks. But if I go into the game menu (which takes ages) I get 30-40 fps.

Help!