Bornakk has announced a handful of in-game hot fixes on the official forums today. They're pretty much all Icecrown Citadel boss ability nerfs and tweaks, and should fixes a few annoyances with some battles, stretching from Marrowgar to Sindragosa. The full list is after the break.

• In the Lord Marrowgar encounters, the boss will no longer reset threat after a bone storm and will now wait a small amount of time before attacking at the end of a bone storm.
• In the Deathbringer Saurfang encounters, the boss is now less likely to cast Blood Nova on targets affected by Mark of the Fallen Champion.
• In both normal and heroic versions of the 10 player Rotface encounter, the mutated infection ability will not be cast as quickly while the fight progresses.
• In the 10- and 25-player heroic Festergut encounters, the malleable goo ability should no longer target pets.
• In the Valithria Dreamwalker encounters, the duration of Emerald Vigor and Twisted Nightmares were slightly increased.
• In the Sindragosa encounters, the duration of the instability debuff was slightly reduced.