---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 5/9/13 12:22 PM
Description: Reading NBT data

java.lang.ClassCastException: bz cannot be cast to cb
	at bs.f(SourceFile:134)
	at ace.a(SourceFile:30)
	at ajq.a(SourceFile:215)
	at ajq.a(SourceFile:186)
	at ajq.a(SourceFile:145)
	at net.minecraft.server.MinecraftServer.b(SourceFile:112)
	at bjg.a(SourceFile:59)
	at bjg.c(SourceFile:104)
	at net.minecraft.server.MinecraftServer.run(SourceFile:306)
	at gp.run(SourceFile:573)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Corrupt NBT tag --
Details:
	Tag type found: INT
	Tag type expected: LONG
	Tag name: LastUpdate
	Tag parent: Level
Stacktrace:
	at bs.f(SourceFile:134)
	at ace.a(SourceFile:30)
	at ajq.a(SourceFile:215)
	at ajq.a(SourceFile:186)
	at ajq.a(SourceFile:145)
	at net.minecraft.server.MinecraftServer.b(SourceFile:112)
	at bjg.a(SourceFile:59)
	at bjg.c(SourceFile:104)
	at net.minecraft.server.MinecraftServer.run(SourceFile:306)
	at gp.run(SourceFile:573)

-- System Details --
Details:
	Minecraft Version: 1.5.2
	Operating System: Linux (amd64) version 3.8.8-1-ARCH
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 978717488 bytes (933 MB) / 1029046272 bytes (981 MB) up to 3817799680 bytes (3640 MB)
	JVM Flags: 2 total; -Xmx4096M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.