MySQL Manual | D.4.4 Changes in release 3.23.55 (23 Jan 2003)

Fixed double free'd pointer bug in mysql_change_user() handling, that enabled a specially hacked version of MySQL client to crash mysqld. Note, that one needs to login to the server by using a valid user account to be able to exploit this bug.
Fixed bug with the --slow-log when logging an administrator command (like FLUSH TABLES).
Fixed bug in GROUP BY when used on BLOB column with NULL values.
Fixed a bug in handling NULL values in CASE ... WHEN ....
Bugfix for --chroot (see section D.4.5 Changes in release 3.23.54 (05 Dec 2002)) is reverted. Unfortunately, there is no way to make it to work, without introducing backward-incompatible changes in `my.cnf'. Those who need --chroot functionality, should upgrade to MySQL 4.0. (The fix in the 4.0 branch did not break backward-compatibility).
Make --lower-case-table-names default on Mac OS X as the default file system (HFS+) is case insensitive.
Fixed a bug in `scripts/mysqld_safe.sh' in NOHUP_NICENESS testing.
Transactions in AUTOCOMMIT=0 mode didn't rotate binary log.
Fixed a bug in scripts/make_binary_distribution that resulted in a remaining @HOSTNAME@ variable instead of replacing it with the correct path to the hostname binary.
Fixed a very unlikely bug that could cause SHOW PROCESSLIST to core dump in pthread_mutex_unlock() if a new thread was connecting.
Forbid SLAVE STOP if the thread executing the query has locked tables. This removes a possible deadlock situation.

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