I have found that I had spend the funds:
http://btc.blockr.io/address/info/1FEFbvesv5aWTyffJ2Nge6C83TtP7SX1fEIt is only the problem with blockchain and their wallet.
Since, this is spreading, and I am not sure from where it started, can someone tell me how to deal with this?I will pay the lender by withdrawing from bitfinex. It should work smoothly.
But I need advice on this. I don't want this warning everwhere, though it is shown only on blockchain.
Update:
A quote from someone else posting a similar issue.
It means someone somewhere cheated you by sending you funds that never confirmed and instead were double spent. You then unknowingly are propagating this cheat to someone else by sending a payment with funds that will never confirm and include a double spent coin.
Nobody cheated him. Its a current issue with blockchain.info wallets.
The balance should come back and then the transaction can be resend. Wait for sometime and let them fix this.