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Percona is glad to announce the release of Percona Server 5.1.66-14.1 on October 26th, 2012 (Downloads are available from Percona Server 5.1.66-14.1 downloads and from the Percona Software Repositories).
Based on MySQL 5.1.66, including all the bug fixes in it, Percona Server 5.1.66-14.1 is now the current stable release in the 5.1 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.1.66-14.1 milestone at Launchpad.
Resolved the Ubuntu Percona Server package conflicts with upstream packages. Bug fixed #907499 (Ignacio Nin).
Percona Server would crash on a DDL statement if an XtraDB internal SYS_STATS table was corrupted or overwritten. This is now fixed by detecting the corruption and creating a new SYS_STATS table. Bug fixed #978036 (Laurynas Biveinis).
Postfix would crash on CentOS/RHEL 6.x when using shared dependency (libmysqlclient.so). Fixed by building packages with OpenSSL support rather than the bundled YaSSL library. Bug fixed #1028240 (Ignacio Nin).
Flashcache support resulted in confusing messages in the error log on Percona Server startup, even when flashcache was not used. This was fixed by adding new boolean option flashcache. When set to 0 (default), flashcache checks are disabled and when set to 1 checks are enabled. Error message has been made more verbose including error number and system error message as well. Bug fixed #747032 (Sergei Glushchenko).
Cleaned up the test duplicates in regular atomic operation tests. Bug fixed #1039931 (Laurynas Biveinis).