I am mining eth for few days and have done some transactions on the account. Today I tried to unlock my account and transfer some eth and was greeted with insufficient balance. I checked the transaction it was made just 2 mins before I unlocked the account (has a passphrase). I am not sure if it's a coincidence.
Here is the transaction: https://etherchain.org/tx/0xd74e7ca49a06a1b3f4419e43c222c6a780ff112edc543405320e3eb5701ec30a
The amount is weird and it could be one of my addresses. But I didn't manually make any transfers. Is there another way it could have happened?