Aganju: Me too! Somtimes, when I went quickly from one back-/nackgammon game to another, I got the same dice roll again. I wasn't sure if it is a bug, it may have been coincidence. But if others observe it too, there must be something about it.

I generally don't trust the dice generation on BK very much.

There is a way to solve this topic: by using a CSPRNG (cryptographically secure pseudorandom number generator). It is surprisingly easy to program one by using a block cipher like XTEA and encrypt a counter value to obtain random numbers, with a secret key. The code may be published so that the users know that the random number generation is well programmed. The random numbers cannot be predicted, though, if the key is kept secret. One might even use a different key for every game and publish the key after the game has ended, so that the users can check if the random numbers in their game have been created correctly.