#Upon installing Beta 8, at first, I was seeing a LOT of these in console:

2012-03-11 12:30:49 [INFO] [OFC] Error reading Orebfuscator Chunk cache data: Unexpected end of ZLIB input stream

#After seeing those for an hour or so, I got these two errors, and the map stopped updating, or seemed to.
#Thanks Lishy!

2012-03-11 12:31:45 [SEVERE] Exception in thread "Orebfuscator Calculation Thread"
2012-03-11 12:31:45 [SEVERE] java.lang.OutOfMemoryError: Java heap space
2012-03-11 12:31:45 [SEVERE] 	at net.minecraft.server.NBTTagIntArray.load(SourceFile:26)
2012-03-11 12:31:45 [SEVERE] 	at net.minecraft.server.NBTBase.b(SourceFile:96)
2012-03-11 12:31:45 [SEVERE] 	at net.minecraft.server.NBTTagCompound.load(NBTTagCompound.java:53)
2012-03-11 12:31:45 [SEVERE] 	at net.minecraft.server.NBTBase.b(SourceFile:96)
2012-03-11 12:31:45 [SEVERE] 	at net.minecraft.server.NBTCompressedStreamTools.a(SourceFile:75)
2012-03-11 12:31:45 [SEVERE] 	at lishid.orebfuscator.cache.ObfuscatedCachedChunk.getDataAndProximityList(ObfuscatedCachedChunk.java:85)
2012-03-11 12:31:45 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:290)
2012-03-11 12:31:45 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:194)
2012-03-11 12:31:45 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:153)
2012-03-11 12:31:45 [SEVERE] 	at lishid.orebfuscator.threading.OrebfuscatorThreadCalculation.run(OrebfuscatorThreadCalculation.java:134)

2012-03-11 12:32:07 [SEVERE] Exception in thread "Orebfuscator Calculation Thread"
2012-03-11 12:32:07 [SEVERE] java.lang.OutOfMemoryError: Java heap space
2012-03-11 12:32:07 [SEVERE] 	at net.minecraft.server.NBTTagIntArray.load(SourceFile:26)
2012-03-11 12:32:07 [SEVERE] 	at net.minecraft.server.NBTBase.b(SourceFile:96)
2012-03-11 12:32:07 [SEVERE] 	at net.minecraft.server.NBTTagCompound.load(NBTTagCompound.java:53)
2012-03-11 12:32:07 [SEVERE] 	at net.minecraft.server.NBTBase.b(SourceFile:96)
2012-03-11 12:32:07 [SEVERE] 	at net.minecraft.server.NBTCompressedStreamTools.a(SourceFile:75)
2012-03-11 12:32:07 [SEVERE] 	at lishid.orebfuscator.cache.ObfuscatedCachedChunk.getDataAndProximityList(ObfuscatedCachedChunk.java:85)
2012-03-11 12:32:07 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:290)
2012-03-11 12:32:07 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:194)
2012-03-11 12:32:07 [SEVERE] 	at lishid.orebfuscator.obfuscation.Calculations.Obfuscate(Calculations.java:153)
2012-03-11 12:32:07 [SEVERE] 	at lishid.orebfuscator.threading.OrebfuscatorThreadCalculation.run(OrebfuscatorThreadCalculation.java:134)

#I have rolled back to Beta7 For the time being, Let me know what you think! Thanks
#Note: I had the proximity hider disabled when this happened.