Experience problem with new recommended build.

Hello, theres no experience drop on my worlds (i generated even new world with dimension door to check if it is not caused by an old worlds)
Any idea how to fix it ?
my plugins:

Code:

Tuto
iConomy
 Stargate
 ConsoleScheduler
WorldEdit
 nChat
 WorldGuard
Essentials
AuthMe
WordReplace
EssentialsSpawn
AutoGamemode
NoCheat
DimensionDoor
MineBackup
Playtime,
MoneyDrop
MinecraftViewer
OKReload
PermissionsEx
Lockette
CleanroomGenerator
Websend
CommandHelper
Permissions
EssentialsProtect
dynmap
Orebfuscator
ChestShop
Register
MonsterHunt
SimpleRegionMarket
mcMMO