Let me give you a prime example. Look at the item serials.
In this example not only was the item duplicated, but they tried to upgrade the +8 again after it was already made +9 and traded to another player.
[Only registered and activated users can see links. Click Here To Register...]
the image is from 2moons support site
Duplicated, upgraded and soon to be gone forever.
For those of you running private servers.. try this little bit of sql in your analyzer to find all of the duplicates on the characters.
Code:
use [character]
go
select wIndex,dwSerialNumber, count(*) as cnt from user_bag with(nolock) where dwSerialNumber != 0x00000000000000000000000000000000
group by wIndex,dwSerialNumber
having count(*) > 1
Do you think I know what I'm talking about?