Linda Support 20:32:
It may be lost in the network.

Linda Support 20:33:
Please be advised to enter the correct Bitcoin address next time in your transfers.

Miso 20:33:
But it is not lost in the bitcoin network (as it is not in the blockchain) => it is lost in the MtGox's network

Linda Support 20:33:
We will not be able to trace the lost Bitcoin transaction.

Miso 20:34:
But it is not a Bitcoin transaction

Miso 20:34:
Bitcoin transactions are all reflected in the blockchain

Linda Support 20:35:
We will not be able to trace the lost Bitcoin withdrawal.

Miso 20:36:
Who is "we"? The transaction is invalid and has a reference number. It is stored in MtGox's database

Miso 20:36:
Any admin could do that

Miso 20:37:
So do you think it is time to contact Mark Karpeles? Some guys have already recommended to do that...

Linda Support 20:38:
Mtgox will note be able to trace the withdrawal made to a invalid Bitcoin address.