Percona Server 5.5.17-22.1 released
From the webpage:
Percona is glad to announce the release of Percona Server 5.5.17-22.1 on November 19th, 2011 (Downloads are available here and from the Percona Software Repositories).
Based on MySQL 5.5.17, including all the bug fixes in it, Percona Server 5.5.17-22.1 is now the current stable release in the 5.5 series. All of Percona ‘s software is open-source and free, all the details of the release can be found in the 5.5.17-22.1 milestone at Launchpad or in the Release Notes for 5.5.17-22.1 in the documentation.
I haven’t installed or run a Percona Server, but the reported performance numbers are good enough to merit a closer look.
If you have run a Percona server, please comment.