Something very strange happened today. blockchain.info let me send 1.48 BTC when I only had 0.6. I had a incoming transaction of 1 BTC. For some reason it made the sending transaction twice (received and sent BTC in the same block) and it is displayed as unconfirmed and my balance is negative.
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The only simple question that i can ask you is that why would you even try to spend 1.48 btc when you know quite well that you have only 0.60 btc?