MySQL 5.1.26-rc が公開されました。　このバージョン 5.1.26 は、バージョン 5.1 系列での３度目の RC(リリース候補)版になります。
ダウンロードは以下のURLから。
http://dev.mysql.com/downloads/


発表によると、今回の 5.1.26-rc で、5.1系列のRC版公開は最後になり、次のリリースでは製品版（GA)になる予定とのことです。

・FEDERATED エンジンがデフォルトではオフになりました

その他、件数は少ないでっすがいくつかの修正が加えられていますので、修正ログをごらんください。


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以下チェンジログ

■機能の追加と変更
- The FEDERATED storage engine now is disabled by default in binary distributions. The engine is still available and can be enabled by starting the server with the --federated option. (Bug#37069: http://bugs.mysql.com/37069)

■バグ修正
- An empty bit-string literal (b'') caused a server crash. Now the expression is accepted as an empty binary string (which has a value of 0 in numeric context). (Bug#35658: http://bugs.mysql.com/35658)

- Replication: Performing an insert on a table having an AUTO_INCREMENT column and an INSERT trigger that was being replicated from a master running MySQL 5.0 or any version of MySQL 5.1 up to and including MySQL 5.1.11 to a slave running MySQL 5.1.12 or later caused the replication slave to crash. (Bug#36443: http://bugs.mysql.com/36443) See also Bug#33029: http://bugs.mysql.com/33029

- Row-based replication broke for utf8 CHAR columns longer than 85 characters. (Bug#37426: http://bugs.mysql.com/37426)

- NOT IN subqueries that selected MIN() or MAX() values but produced an empty result could cause a server crash. (Bug#37004: http://bugs.mysql.com/37004)

- ha_innodb.so was incorrectly installed in the lib/mysql directory rather than in lib/mysql/plugin. (Bug#36434: http://bugs.mysql.com/36434)

- The code for detecting a byte order mark (BOM) caused mysql to crash for empty input. (Bug#35480: http://bugs.mysql.com/35480)

- The mysql client incorrectly parsed statements containing the word "delimiter" in mid-statement. (Bug#33812: http://bugs.mysql.com/33812)