If you’re on openSUSE, you definitely want to upgrade to the latest MariaDB release made on 19/07/2011. Previous security fix disabled XtraDB! This is MariaDB 5.1.55.
If you’re using Gentoo, please test MariaDB 5.2 ebuilds in the MySQL overlay. Its current with MariaDB 5.2.7 as well as MariaDB 5.1.55.