I am currently in a 10 man guild, and we are fervently working on Lich King (Normal). We have phases 1 and 2 (including transitions) down pat. However, things turn into a train wreck once we hit the vile spirits in phase 3. Here's our makeup:
Tanks:Pally/Druid (Druid has 60k, pally has 50k)
Heals: Disc Priest, Resto Shaman, Resto Druid
DPS: Fury Warrior (Me), Warlock (Can go destro, aff, and shadowfury spec), Mut Rogue, Mage (FFB or Arcane), and Unholy DK
What we have been doing is having the lock seeding one spirit, and the mage LBing it as well as single targeting it. However, by the time the spirits come down, they are all ~15% health left. From there, they blow up the raid. Keep in mind as well that at this time, the druid is tanking 1-2 Raging Spirits. From what I have seen from videos, most of the spirits are still alive, and people are just moving like hell to kite them. Note as well, that our druid, with Unidentifiable organ up, popping c/ds and such, has 100k+ health. Any suggestions? This is our final obstacle from getting a kill, everything else is flawless from here.