Users Getting Booted Randomly

This happens to one user at a time every so often, they are kicked (not by me). usually when they are kicked it spams that "User has left the server" multiple times up to 4 times usually. After that they are able to rejoin.

sorry there is nothing from the console that can help, my server runs McMyadmin at servercraft.co

Serverinfo

Code:

#2011-04-08 18:45:04

#Server info:
Server name - Unknown Server
Server port - 8651
Minecraft version - 1.5_02
Bukkit build - 740
Bukkit version - git-Bukkit-0.0.0-706-gf53e007-b740jnks (MC: 1.5_02)

#Plugins info:
ApiCraft - 0.2
AutoAnnouncer - 1.1-04.10
BedrockControl - 1.4
BorderGuard - 3.1
BukkitCompat - r13
ControllerBlock - 1.18
CraftBukkitUpToDate - 2.5.1
dynmap - 0.16
Essentials - 2.2.6
EssentialsProtect - 2.2.6
EssentialsSpawn - 2.2.6
FalseBookCore - 0.84alpha
FalseBookIC - 0.84alpha
FishPeople - 1.5
FullChest - 0.1
GroupManager - 1.0(alpha-5)
HeroChat - 4.10.3
iConomy - 5.0
joerep - 0.5
JSONAPI - 1.1
LogBlock - 0.15
LoginMessage - 0.6.4
LWC - 2.31
mcbans - 2.9.1
mcMMO - 1.0.07
MessageChanger - 0.22
MinecartManiaCore - 1.1.9
MkDir - 1.1
MonsterHunt - 1.0.2
MultiHome - 0.9.2
PerformanceTweaks - 0.06
Permissions - 2.5.1
PluginInfo - 0.1.2
RealShop - 0.6
Residence - v2.0
ShelfSpeak - 0.5
SignColours - 0.3
SlowHealth - 3.0.1
Sprint - 0.9
uQuest - 1.21
VehicleZap - 1.1.0
WeatherControl - 1.1.0
Whitelist - 2.7
WolfPound - 0.12
WorldEdit - 4.5

nothing? anyone? no one is getting spam for users leaving the game, it shows the user leave 3-5 times usually

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

This happen if users try use flycheat or smth another. Or fast drill down (i mean,drill column down)

Code:

allow-flight=false

check your server.properties.

 

fast drill, so mcmmo could be causing this?

no access tp server.cfg :/

 

no, I mean fast drilling down. Just create collumn from 50 to 129 block and start drill down.