Would you quit making threads about this? Just for the record, the private servers are made by the people who have ALL known exploits for the closed realm, and if you could look at the source you would probably find some yourself. Hence, they are patched much much better than closed realms (know from testing) and if you don't have a dupe for closed d2, you will not have one on the private server
Only way i could see it happening is if they have an outdated d2gs. Oh and btw, does anyone know where its possible to obtain source for d2gs? If I am mistaken and its open source thatd pwn.