I get this error while unlocking accnt at a geth attach instance (using Go1.5.1 now)
> personal.unlockAccount(eth.accounts, "i know the pwd is right")
Decryption failed: MAC mismatch
at InvalidResponse (:-81662:-54)
at send (:-156322:-54)
at unlockAccount (:-133322:-54)
The account was created while ago (august 2015).
Is this a problem related with the GETH version i´m using now?
I remember some problems back then with chars and inputs methods at comandline, when account was created.