Java Edition 1.5.1 (pre-release)

Changes

 * Improved performance

Fixes
5 bugs fixed


 * – OSX: Crash on startup (OpenGL "Function is not supported")
 * – FPS Drop due to Smooth Lighting
 * – The text of things fall out of the picture
 * – Invalid potion effects crash the game.
 * – Crash with invalid wool values

Reupload
The 1.5.1 pre-release was reuploaded on March 20, 2013 to fix a null pointer crash.