When I press my skillbar hotkey for my DK skill "Choking Talons" (morph for Dark Talons) it casts it over and over on rapid-fire instead of waiting for me to release the key. It casts it so fast that I only SEE one cast, but it sucks up my entire magicka bar. I had to FRAPs this to finally figure out what was happening.
You can see what's happening if you have the addon "Foundry Tactical Combat" installed since it shows target information. If I press and hold my hotkey for Talons you can see it re-starting the cast over and over as fast as possible. (Note, if you don't have an actual target in range it won't consume any magicka, but does show some animation when you release the hotkey.)
I've tried moving Talons to different slots on my skillbar, and I've tried re-mapping it other keys, and to the left button as well. I've also tried it with all addons disabled. In all cases it exhibits the same behavior.
I asked in guild chat if any other DKs had this problem, but didn't get much response. One guy said he didn't, while another said he did only in PvP, and figured it was just due to lag.
Is anybody else having this problem?
As it is, I can't use Talons at all, because I can't afford having it eat up all my magicka every time I cast it. My build is very dependent on this skill for group activity, so I basically I can't group at all until it's resolved.