Item Duping

Not exactly a hack, but this is a convenient way to take advantage of server problems. From what I've seen and noticed, this method can only be done when you're getting those nasty HTTP errors whenever you're zoning. I accidentally came across this while I was trying to feed my wiz a bunch of wis pots. I knew I didn't have enough to max, but something happened and a bunch of wis pots got duped. Not sure how many people ran across this, but here's how to do it if anyone is interested:

(1) Have two people, person A has the items you're trying to dupe, person B has nothing on them. Do this in Nexus.
(2) Trade the items from person A to person B. Ensure that person B does not go anywhere.
(3) Have person A go into the vault. You WILL be waiting for a long time for you to connect to the vault. The longer, the better.
(4) Hope and pray that person A's prior actions are invalidated, and the items are restored to your inventory.

If it fails, have person B go into their vault and have both come back out. Try again except now A and B's roles are reversed.

BE VERY CAREFUL WHILE DOING THIS. There is an equally likely chance that you'll lose the items you're trying to dupe. This has happened to a few people I know.

Let me know if this helps anyone.

EDIT: This takes patience and lots of luck to pull off. You will be spending a while just waiting for the game's servers to become broken, and even longer to pull the trick off. Modified part 3 to make it clear that the waiting is done while the game tries to connect you to the vault. If you aren't getting a wall of red text saying something about the appengine, quit trying. The game isn't erroring out like we need it to.