I've made a transaction, send 1 BTC to adress shown in the screen shot.
I didn't made the second 2.5 transaction, where did my money go?
I have no private key to this second adress where all my spare btc had gone.
After transaction I've deleted wallet.dat becouse I was sure that all my btc are safe at the adress which they have been send to previously.
Does it mean that my btc are lost forever?
I've tried to recover the lost wallet.dat but any of the data recover software can not find it.
Does it mean that when I have cold paper wallet like I did, and want to spend only a bit of it I have to dump another private key after each transaction?
What the hell happened? Am I missing sth? I want my btc back so badly.
Good luck retrieving your wallet!
Next time you better use ARMORY by Alan Reiner (aka etotheipi).
Unlike the main client (Bitcoin-Qt),
you only need ONE backup EVER!!.
It doesn't matter how many addresses you use -- they're all derived from the information on that ONE paper backup!
Works also if you forget your passphrase.
Luckily, Armory has the ultimate solution for this: Paper Backups! Use it!
https://bt.irlbtc.com/view/152151.msg1614537#msg1614537https://bitcointalk.org/index.php?board=97.0