You inexplicably paid a transaction fee of only BTC0.00000001. That is why your transaction has not confirmed and likely will not anytime soon. In the future, please pay a fee of at least BTC0.0001 per kB to ensure fast confirmation.
1 satoshi is my default fee. The QT usually changes the fee automatically to 0.1 mBTC, but this time, 1 satoshi was enough.
(I already had some transactions confirmed with 1 satoshi as fee without a problem)
You should change the default fee setting in your Bitcoin-Qt from 1 satoshi to 0.0001 BTC.
Most miners (and mining pools) treat any fee of less than 0.0001 BTC per kilobyte the exact same way they treat transactions that pay no fee at all.
Yes, transactions with no fee generally do get confirmed eventually (as long as they don't have any other issues), but as you've just discovered sometimes you have to wait. There is no good way to predict exactly how long it will take for the transaction to confirm. It could happen in the next few seconds, or it could take many days. Right now you are stuck waiting for a generous miner (or mining pool) to decide to confirm your practically free transaction for you.
