Java Edition 1.5.1 (pre-release)

1.5.1 is the first and only pre-release for Java Edition 1.5.1.

General

 * Performance
 * Improved performance.

Reupload
The 1.5.1 pre-release was reuploaded on March 20, 2013 to fix a null pointer crash. This reupload then proceeded to be the true release of 1.5.1.