We have now killed The Lich King on hard mode in 10-man Icecrown Citadel. Good job everyone who were on the kill and to all those who participated on the endless strategy discussion.
The encounter had a bug in the spirit phase, which we reported two weeks ago, but the bug didn't get fixed until today. The bug made the encounter somewhat harder. We had already worked our way around the spirit problem on last week's reset, so the kill was definitely within our grasp even without any extra attempts or buffs.