Bukkit

this is spamed in console continuously if sunburn is enable

15:31:07 [SEVERE] java.util.ConcurrentModificationException
15:31:07 [SEVERE]       at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:782)
15:31:07 [SEVERE]       at java.util.ArrayList$Itr.next(ArrayList.java:754)
15:31:07 [SEVERE]       at org.bukkit.craftbukkit.CraftWorld.getLivingEntities(CraftWorld.java:506)
15:31:07 [SEVERE]       at me.ahniolator.plugins.sunburn.Sunburn$1.run(Sunburn.java:85)
15:31:07 [SEVERE]       at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
15:31:07 [SEVERE]       at java.lang.Thread.run(Thread.java:679)

latest recomended build of MC 1.0.1
15:35:22 [INFO] [SunBurn] was created by: Ahniolator
15:35:22 [INFO] [SunBurn] Current Version: v2.21

15:34:07 [INFO] Plugins: FalseBookBlock, OKLoginTiers, SunBurn, My Worlds, MinecraftViewer, Questioner, PermissionsBukkit, OKModTickets, SignLink, Lockette, FalseBookIC, WorldEdit, FalseBookCore, FalseBookExtra, ChannelChat, RawcriticsOreObfuscationPluginSpout, CommandBook, iConomy, xAuth, Lumberjack, SpoutEssentials, BanHammer, HideLogin, RemoteToolkitPlugin, MineMaze, Spout, Permissions, Forester, WorldGuard, mcMMO, MyHome, Dynmap-Towny, dynmap, Dynmap-WorldGuard, Register, DeathControl, VanishNoPacket, TownyChat, Towny, ChestShop, Train Carts, WorldBorder, properTime, HawkEye

however the plugin still works fine.