Below you can see a changelog, which was made on 5.4.2 for two week, from 13.03.14 to 27.03.14:

General:

- Fix many exploits, thanks for all your messages.
- Fix bug, when players can change specialization with macros for all pets, and can add many incorrect spells to him.
- Fix bug, when players can not withdraw money from guild + fix guild bonus for gold.
- Fix show guild XP.
- Fix bug, when players received not correct achievements with currency.
- Fix regen focus and energy.
- Fix bug, when currency cap, can random reset in any time.
- Many fixes for quests, loot, creature, gameobjects from forum bug-reports.
- Fix 3 reasons of server crash.

Arena and BG:

- Implemented Rated battlegrounds.
- Now spell http://www.wowhead.com/spell=144389 correct work, use temporary instead http://www.wowhead.com/spell=110310.
- Fix another bug with high tick points on BG Temple of Kotmogu.
- Now you can not leave from arena before start battle.
- Fix bug, when incorrect received lose on arena, after opponent leave from arena, or not join.
- Temporary disable BG Arathi Basin, need fix some problem after implemented RBG, planned enable again in next update with some new BGs.

Spells:

Death Knight:

- Fix equip check for spell mods, fix spell http://www.wowhead.com/spell=66192 and another.
- Fix many bugs with spell http://www.wowhead.com/spell=81333.
- Fix rune cooldown exploit, and spam spell http://www.wowhead.com/spell=73975.
- Fix http://www.wowhead.com/spell=59307.
- Fix http://www.wowhead.com/spell=58616.
- Fix http://www.wowhead.com/spell=58629.

Priest:

- Fix high heal from spell http://www.wowhead.com/spell=2061.
- Fix high damage from spell http://www.wowhead.com/spell=589.
- Fix high heal from spell http://www.wowhead.com/spell=88685.
- Fix high heal from spell http://www.wowhead.com/spell=33076.
- Fix spell http://www.wowhead.com/spell=89485.
- Fix bug, when after use spell http://www.wowhead.com/spell=64904, mana set to incorrect value.
- Fix spell http://www.wowhead.com/spell=33206.
- Fix bug, when spell http://www.wowhead.com/spell=47788 absorb too much damage.
- Fix spell http://www.wowhead.com/spell=47515.
- Fix http://www.wowhead.com/spell=77484.
- Fix spell http://www.wowhead.com/spell=109964.
- Fix http://www.wowhead.com/spell=55672.
- Fix http://www.wowhead.com/spell=120583.
- Fix http://www.wowhead.com/spell=14771.

Hunter:

- Fix http://www.wowhead.com/spell=76658.
- Fix low damage from spell http://www.wowhead.com/spell=115939.
- Fix high damage from spell http://www.wowhead.com/spell=53351.
- http://www.wowhead.com/spell=109248 now stun in pvp on 3 sec.
- Fix low damange from talent http://www.wowhead.com/spell=131894.
- Now after use http://www.wowhead.com/spell=53301 on target apply http://www.wowhead.com/spell=1130.
- Fix talent http://www.wowhead.com/spell=109212.
- Fix work Battle Fatigue for spell http://www.wowhead.com/spell=82654 and another.

Warrior:

- Fix proc rules for spell http://www.wowhead.com/spell=29725.
- Fix http://www.wowhead.com/spell=76838.
- Fix http://www.wowhead.com/spell=76856.
- Fix spell http://www.wowhead.com/spell=114028, in accordance with changes in patch 5.3.
- Fix spell http://www.wowhead.com/spell=81099.
- Fix proc rules for spell http://www.wowhead.com/spell=60503.
- Fix http://www.wowhead.com/spell=58355 and another.
- Fix http://www.wowhead.com/spell=58372.

Paladin:

- Fix spell http://www.wowhead.com/spell=53563.
- Fix talent http://www.wowhead.com/spell=114157.
- More correct work spell http://www.wowhead.com/spell=35395.
- Fix spell http://www.wowhead.com/spell=85512.
- Fix talent http://www.wowhead.com/spell=85804.
- Fix http://www.wowhead.com/spell=76672.

Monk:


- Add gcd for pet spells http://www.wowhead.com/spell=123904.
- Ad gcd for spell http://www.wowhead.com/spell=115399.

Mage:

- Fix increase damage spell http://www.wowhead.com/spell=30455 from spell http://www.wowhead.com/spell=44544.
- More correct work http://www.wowhead.com/spell=76613.
- Fix http://www.wowhead.com/spell=86209.

Rogue:

- Fix work Battle Fatigue for spell http://www.wowhead.com/spell=8679 and another.

Druid:

- Fix bug, when after proc spell http://www.wowhead.com/spell=93399 in some time can not use spell http://www.wowhead.com/spell=78674.

Warlock:

- Now spell http://www.wowhead.com/spell=116858 have 25% less damage to players.
- Now spell http://www.wowhead.com/spell=108415 20% of all damage taken is split with your summoned demon, not 50%.

Shaman:

- Fix high heal from spell http://www.wowhead.com/spell=73920.