MySQL 5.1 has been under development for a long time and includes some significant improvements such as a new plugin API, support for row-based replication, and table partitioning.

The fix was only applied to MySQL 5.7.3 and later; 5.7.x is not yet even a GA release! (Also, the fix was applied to version 6.1.3 of the standalone libmysqlclient distribution ). The worse news?