Death Knights have been... very bugged since I started playing Darke. They still make you lose heartbeat more or less every time you try to fight them. As things are, you could (ab)use them to make your castle quite, quite unlootable. ...and that's not to mention the possible abuses in playerkilling.
Several arches have claimed during the years to have un-bugged them, but the same problem still remains. I think it's a wonder that they arent abused more than they are. Why not just remove them until a new Death Knight, thoroughly tested and certain not to make people lose heartbeat is coded?
Furthermore... CPR does not work almost ever if you lose heartbeat. Well, I have never seen it work on Darke, the few times I have lost heartbeat...
Loc: Arlee, MT, USA
I haven't seen a Death Knight in ages, let alone fought one, but I'd think that if they were constantly the cause of heartbeat loss bug reports and combat-error logs would be filled with messages about them.
Darkemud has a long and storied history of never replacing things that are "removed until..." If something gets removed to be fixed, rather than fixed and updated, it stays removed. I personally don't feel that this is the best option at all. If they're bugged, they should be repaired or replaced. If they can't be repaired in good fashion, whatever functionality they have that's causing the problem should be replaced with something that's of equal power and not causing problems.