This is such a bad bug that I felt it is necessary to publicise it.
Basically there is information that people are "jamming" two weapons into their stats, such that damage is doubled.
E.g. Min-max is 100-200, with this bug it becomes 200-400.
I heard the same can also be done with armor.
This bug also causes massive server lag with the exploiters abusing it and also taking advantage of the situation by buying two times exp pot.
Right now all of us are suffering from this extraordinary lag with even monster lag occuring once every few minutes.
We have had three maintenances in two days so hopefully the publishers are aware of it.
(Devcat please fix it asap = =;;)