Galera o que significa isso?

esse XHD sumiu da minha WALLET e ainda nao retornou faz tempo:

Status: 0/unconfirmed
Date: 08/03/2014 06:56
Debit: 0.00 XHD
Net amount: -2004.477 XHD
Transaction ID: 20f5b19e16ff6efcf767744a5906ddd50806f52dab3f858218353f8f9b64ea61

Generated coins must mature 50 blocks before they can be spent. When you generated this block, it was broadcast to the network to be added to the block chain. If it fails to get into the chain, its state will change to "not accepted" and it won't be spendable. This may occasionally happen if another node generates a block within a few seconds of yours.