There were a few in-game fixes that were applied recently. A few changes to Icecrown Citadel were made.
- For the Sindragosa encounter, Frost Breath cast under 35% HP no longer has a snare component and there are no longer diminishing returns on Taunt effects.
- The Glory of the Icecrown Raider (10 player) meta achievement no longer requires Neck-Deep in Vile to be completed.
I guess the change to Sindragosa is to help tanks who have to get out to reset stacks, although I wasn’t aware it was that big of an issue. The nerf to GotIR(10) must be because Blizzard doesn’t want you to stack certain classes to be successful in a 10man raid.