BETA: GameTimeController AIOOBE fix. I didnt got any problems again, but who knows, maybe they dont occur on plain test servers. Also, Im using TIntObjectHashMap with ReentrantLock instead of the custom one, just because here we need to read and write at the same time (iterate and remove) and if this is done via L2TIntObjectHashMap, you will pretty much get a deadlock (readlock has locked the iteration process and while iterating we remove an object, a writelock is called, but in order to proceed, the writelock waits the readlock to unlock... so you get pretty much infinite wait.)

L2J_Server_BETA/java/com/l2jserver/gameserver/GameTimeController.java

@@ -14,6 +14,10 @@
  */
 package com.l2jserver.gameserver;
 
+import gnu.trove.TIntObjectHashMap;
+import gnu.trove.TObjectProcedure;
+
+import java.util.concurrent.locks.ReentrantLock;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -21,7 +25,6 @@ import com.l2jserver.Config;
 import com.l2jserver.gameserver.ai.CtrlEvent;
 import com.l2jserver.gameserver.instancemanager.DayNightSpawnManager;
 import com.l2jserver.gameserver.model.actor.L2Character;
-import com.l2jserver.gameserver.util.L2TIntObjectHashMap;
 
 /**
  * Removed TimerThread watcher [DrHouse]
@@ -40,7 +43,8 @@ public class GameTimeController
 	protected static boolean _isNight = false;
 	protected static boolean _interruptRequest = false;
 	
-	private static final L2TIntObjectHashMap<L2Character> _movingObjects = new L2TIntObjectHashMap<L2Character>();
+	private static final TIntObjectHashMap<L2Character> _movingObjects = new TIntObjectHashMap<L2Character>();
+	private static final ReentrantLock _lock = new ReentrantLock();
 	
 	protected static TimerThread _timer;
 	
@@ -93,7 +97,15 @@ public class GameTimeController
 		if (cha == null)
 			return;
 		
-		_movingObjects.putIfAbsent(cha.getObjectId(), cha);
+		_lock.lock();
+		try
+		{
+			_movingObjects.putIfAbsent(cha.getObjectId(), cha);
+		}
+		finally
+		{
+			_lock.unlock();
+		}
 	}
 	
 	/**
@@ -110,16 +122,29 @@ public class GameTimeController
 	 */
 	protected void moveObjects()
 	{
-		// Go throw the table containing L2Character in movement
-		for (Object obj : _movingObjects.getValues())
+		_lock.lock();
+		try
+		{
+			_movingObjects.forEachValue(new MoveObjects());
+		}
+		finally
+		{
+			_lock.unlock();
+		}
+	}
+	
+	private final class MoveObjects implements TObjectProcedure<L2Character>
+	{
+		public final boolean execute(final L2Character ch)
 		{
-			// If movement is finished, the L2Character is removed from
-			// movingObjects and added to the ArrayList ended
-			if (((L2Character) obj).updatePosition(_gameTicks))
+			if (ch.updatePosition(_gameTicks))
 			{
-				_movingObjects.remove(((L2Character) obj).getObjectId());
-				ThreadPoolManager.getInstance().executeTask(new MovingObjectArrived(((L2Character) obj)));
+				// If movement is finished, the L2Character is removed from
+				// movingObjects and added to the ArrayList ended
+				_movingObjects.remove(ch.getObjectId());
+				ThreadPoolManager.getInstance().executeTask(new MovingObjectArrived(ch));
 			}
+			return true;
 		}
 	}