Players are getting marked as having an association when they have none. The listed associated player is the same as the current one.
Might be happening with the essentials first join event calling it a player and when they relog they just com in regular and now it logs them as another player.
No errors on the console though.
Plugin list:
WorldBorder, LagMeter, GroupManager, MultiInv, WorldEdit, NoCheatPlus, BanReport, Vault, Multiverse-Core, LogBlock, Questioner, CasinoSlots, VoteChecker, Lottery, Register, Permissions, Votifier, AutoAnnouncer, Essentials, CreeperHeal, XrayInformer, EssentialsProtect, Towny, EssentialsSpawn, Multiverse-Portals, VanishNoPacket, LWC, ChestShop, EssentialsChat, TownyChat
photo: http://i.imgur.com/jMPMS.png