Bug on version 7.1.1- Duplicated Rows with same primary key

Hello,

There is duplicate rows with the same primary key in several tables on
database. This problem appears when a fault power occurs or if we execute
'kill -9' on application witch has a database connection.
In version 7.0.2 that bug don't exist.
Can you tell me, in witch version this bug has been corrected?

Thanks.

Best Regards,

Cláudia