This might very well be the last 1.7.2 update. It contains a big list of bug fixes that have been reported here on the forums, the most important fixes are:
Still on forge 1124, newer versions should work too :D
- Server side crash when teleporting to a dimension
- Bears and Gorillas not attacking the player
- Hermit Crabs spawning, but then dissapearing when a player goes nearby
- Lions not spawning
- Increased spawn rate of the IceStone as an ore in the overworld. Go hunting for it underneath the IcePlains!
Still on forge 1124, newer versions should work too :D
