I will never forget how I lost 0.2 BTC in addresses, wich I never used.
What are you talking about? Do you have issues with the change addresses?
https://blockchain.info/address/1EZPJcRLrMcjQuaomk7hCC3vjovWDMFL7W
https://blockchain.info/address/1NspErFCzA6y8niuvEaCYHgQ1b6FeeX2sG
https://blockchain.info/address/1eZsbVqpbJzSxu9TuXbjhedTcs33HPEbs
You can download my wallet and check the transactions:
https://cloud.mail.ru/public/9Z73/FWynhTCEC
Ah yes you posted above. I remember now.
The address 1eZsbVqpbJzSxu9TuXbjhedTcs33HPEbs was never used to send coins, only to receive coins here[1]. If it is a change address as you suggest your wallet should have the private key to 1NspErFCzA6y8niuvEaCYHgQ1b6FeeX2sG, but it has not.
13:27:11
dumpprivkey 1NspErFCzA6y8niuvEaCYHgQ1b6FeeX2sG
13:27:11
Private key for address 1NspErFCzA6y8niuvEaCYHgQ1b6FeeX2sG is not known (code -4)
Your 1st TX for the wallet is this[2], the change address is 14kF8gLXCtXYGtWLhas9Kn4C3CGnnoNqLj and the wallet knows the private key to it.
13:30:24
dumpprivkey 14kF8gLXCtXYGtWLhas9Kn4C3CGnnoNqLj
13:30:24
Ky-snip-
Im not exactly sure why you blame core, but from what I see in your wallet file there is no issue with it.
[1] https://www.blocktrail.com/BTC/tx/7916f1f0263bdc4fd8d5829fdd473f021bfb83b74e3fc28993228d398b706ce4
[2] https://www.blocktrail.com/BTC/tx/3b01054070a1901bce0be92a4150d89aa1a65fa58bb4fdf8ffb390380d84352e