[HELP] I can't enable PVP no matter what!

When I try hit someone it says, "World PVP is disabled."
Here's my Server.Properties

Code:

#Minecraft server properties
#Fri Jul 29 22:03:39 PDT 2011
level-name=TwilightHaven
allow-nether=true
view-distance=10
spawn-monsters=true
online-mode=true
spawn-animals=true
max-players=50
server-ip=154.5.14.193
pvp=true
level-seed=worstseedever
server-port=25565
allow-flight=true
white-list=false

I have PermissionsBukkit.

 

You don't have essentials or worldedit? That message shouldn't appear for vanilla. Another plugin is making that message. And I am pretty sure its not PermissionsBukkit (or is it?).

I say this because I know Essentials and WorldEdit have anit-pvp functions.

 

If you have Multiverse, Go to every world you want pvp enabled and type

/mvm set pvp true

 

XZeenon
What plugins are you running?