Everybody, please, calm down.
Let's put it in simple steps, to try to see what happened.
1- lqudG3 created a new mixing session
2- lqudG3 sent some coins he wanted to mix to the deposit address. Let's call this address A
3- The transaction got 3 confirmations, and it unlocked the "mix my coins" button
4- lqudG3 clicked that button, and the mixing started
5- lqudG3 received 2 addresses (B and C), with their private keys, so that when the random amount of coins arrived at a random time delay, those could be swept
But we are seeing that B and C never received any coins and are still "mixing". A did receive the coins. So there was either some kind of bug in the system; or the coins didn't arrive in porpuse.
Bugs can happen. But it is very strange that it happened twice to the same user days apart.
Right now, I don't know what to think about this. It's unlikely there is some malware, because the coins were sent to address A, received the confirmations and the website allowed the mixing to start. B and C have not received the coins, so it's not that someone got control of the private key and swept the funds before the user could.