Today we glad to announce release 1.0.3-4 of our XtraDB storage engine.
Here is a list of enhancements in this release:
Move to MySQL 5.1.33
Move to InnoDB plugin 1.0.3
more reliable replication, innodb_overwrite_relay_log_info patch now included in the release
fix assertions for UNIV_DEBUG
new fix for rw_lock patch
Percona XtraDB 1.0.3-4 (Sakura) available in source and several binary packages.