RF Online: Accidental Dupe

Last night, I was trading some of my ores to my main character to be processed (more EGs baby!), when suddenly the server went down right after the trade was done. I thought "damn, another crash. Now I'm gonna have to do the trade again." When the server came back again, to my surprise, my main character had the ores as well as my other character. :) Talk about accidental dupe, or rather trading at the right time. :) Maybe some of you readers may have an idea how those bastards (dupers) do their dirty work.

P.S. For information purposes, I am not a duper. I don't know how to dupe and I don't want to.