InnoDB: Made LOCK TABLES behave by default like it did before MySQL 4.0.20 or 4.1.2: no InnoDB lock will be taken. Added a startup option and settable system variable innodb_table_locks for making LOCK TABLE acquire also InnoDB locks. See Section 15.17, « Restrictions sur les tables InnoDB ». (Bug#3299, Bug#5998)

Fixed a bug with FOUND_ROWS() used together with LIMIT clause in prepared statements. (Bug#6088)

Fixed a bug with NATURAL JOIN in prepared statements. (Bug#6046).

Fixed a bug in join of tables from different databases having columns with identical names (prepared statements). (Bug#6050)

Now implicit access to system time zone description tables (which happens when you set time_zone variable or use CONVERT_TZ() function) does not require any privileges. (Bug#6116)

Fixed a bug which caused server crash when deprecated libmysqlclient functilon mysql_create_db() was called. (Bug#6081)

Fixed REVOKE ALL PRIVILEGES, GRANT OPTION FROM user so that all privileges are revoked correctly. (Bug#5831). This corrects a case that the fix in 4.1.6 could miss.

Fixed a bug that could cause MyISAM index corruption when key values start with character codes below BLANK. This was caused by the new key sort order in 4.1. (Bug#6151)

Fixed a bug in the prepared statements protocol when wrong metadata was sent for SELECT statements not returning a result set (such as SELECT ... INTO OUTFILE). (Bug#6059)

Fixed bug which allowed to circumvent missing UPDATE privilege if one had INSERT and SELECT privileges for table with primary key. (Bug#6173)

Fixed a bug in libmysqlclient with wrong conversion of negative time values to strings. (Bug#6049).

Fixed a bug in libmysqlclient with wrong conversion of zero date values (0000-00-00) to strings. (Bug#6058)

Fixed a bug that caused the server to crash on attempt to prepare a statement with RAND(?). (Bug#5985)

Fixed a bug with handling of DATE, TIME, and DATETIME columns in the binary protocol. The problem is compiler-specific and could have been observed on HP-UX, AIX, Solaris9, when compiling with native compiler. (Bug#6025)

Fixed a bug with handling of TINYINT columns in the binary protocol. The problem is specific to platforms where the C compiler has the char data type unsigned by default. (Bug#6024)

Fixed problem introduced in MySQL 4.0.21 where a connection starting a transaction, doing updates, then FLUSH TABLES WITH READ LOCK, then COMMIT, would cause replication slaves to stop complaing about error 1223. Bug surfaced when using the InnoDB innobackup script. (Bug#5949)