It's OK I checked the signature and app is placed in my personal folder so it is not from instaler...

I realy don't get it how that happened and wondering if I didn't exchanged BTC->USD  will BTC been stolen?
Looks like malware somehow is trying to withdrow all BTC ballance.
I dont Know what happened. I checked my PC with Emsisoft asquared Antivirus and found nothing except some bad reg keys.

We shall see what will Bitstamp team tell me and if that happened in the same time when Qt BitcoinTrader conected through API. If yes it is interconected somehow with Qt BTC Trader.

I will post it here when they answer me...

b0du1