释放双眼，带上耳机，听听看~！
PostgreSQL 开发团队今天发布了所有版本分支的小更新版本，分别是：9.1.1, 9.0.5, 8.4.9, 8.3.16 and 8.2.22.
强烈建议所有 PostgreSQL 立即升级！
从今年开始 PostgreSQL 社区将停止发布 8.2 版本的更新，建议使用 8.2 版本的用户升级到更新的版本。
这次发布的更新版本主要修复了很多的bug以及一些潜在的导致程序崩溃和数据损坏的问题，包括：
- Applied upstream fix in contrib/pg_crypto for blowfish signed-character bug (CVE-2011-2483), where encryption code could give wrong results on platforms where char is signed (which is most), leading to encrypted passwords being weaker than they should be;
- Work-around for gcc 4.6.0 bug that breaks WAL replay;
- Fixed memory leak at end of a GiST index scan;
- Improved handling of SSL errors;
- Fixed SSPI login when multiple roundtrips are required (typical error reported was “The function requested is not supported”);
- Fixed VACUUM so that it always updates pg_class.reltuples and pg_class.relpages;
- Allowed the planner to assume that empty parent tables really are empty;
- Disallowed SELECT FOR UPDATE/SHARE on sequences;
- Fixed failure when DROP OWNED BY attempts to remove default privileges on sequences.
该版本包含：11 patches to 9.1, 147 patches to 9.0, 96 patches to 8.4, 73 patches to 8.3 and 52 patches to 8.2.
下载地址：download page
