[UOT]

Right now in the Save method of world you have

			if ( m_MultiProcessor )
			{
				Thread saveThread = new Thread( new ThreadStart( SaveItems ) );

				saveThread.Name = "Item Save Subset";
				saveThread.Start();

				SaveMobiles();
				SaveGuilds();
				SaveRegions();

				saveThread.Join();
			}
			else
			{
				SaveMobiles();
				SaveItems();
				SaveGuilds();
				SaveRegions();
			}

Isn't SaveItems missing from the threaded save?

			if ( m_MultiProcessor )
			{
				Thread saveThread = new Thread( new ThreadStart( SaveItems ) );

				saveThread.Name = "Item Save Subset";
				saveThread.Start();

				SaveMobiles();
				SaveItems();
				SaveGuilds();
				SaveRegions();

				saveThread.Join();
			}
			else
			{
				SaveMobiles();
				SaveItems();
				SaveGuilds();
				SaveRegions();
			}