Thank you for fast and complex explanation!
I can see now what is happening. About one week ago, I received tiny amount of coins (684b) which are yet to be processed (32956d6013d95928ee862e755f144f2676f42c1ee5edba0405c2e4c99d47e5e8) and, to be honest, I have no idea where it come from. But as knightdk said, it cannot be confirmed until previous one will be (6ff132bd00c6a0ab6898b25d04073f6414d8c325a4df1a6f6771bbc7d9dbe6f3).
I was waiting for a new transaction to be confirmed, which I was sure it will take no more than couple o minutes (and I was right). So, I guess, I spent it before it was confirmed, and my not-so-smart wallet made new output, by mixing it with the part of other unconfirmed transaction. The other one, being unconfirmed for days now.
No I have blocked 10000000 satoshi, because of unconfirmed 684 satoshi
Is there ANYTHING I can do to fix that? Is there a chance, that this transaction will be never confirmed because of too small fee? Is it possible to loose your money like that?