From Minecraft Wiki
March 19, 2013
1.5.1-pre is the pre-release for 1.5.1.
- Improved performance
From released versions before 1.5.1
- MC-1879 – Massive ping issues since 1.3.2
- MC-2739 – Trapdoors and pressure plates (and maybe more) cause lighting problems
- MC-8824 – FPS Drop due to Smooth Lighting
- MC-11047 – After changing texture packs thrown Ender Pearls & Splash potions become other items
- MC-11654 – The text of things fall out of the picture
- MC-11839 – Invalid potion effects crash the game.
- MC-11894 – Crash with invalid wool values
- MC-12254 – Dispenser/Right click incorrectly puts on armor
From the 1.5 snapshots
- MC-7174 – OSX: Crash on startup (OpenGL "Function is not supported")
- MC-7191 – Hopper beneath furnace doesn't remove empty buckets
The 1.5.1 pre-release was reuploaded on March 20, 2013 to fix a null pointer crash.