You can just see how bad it is in their video, which makes it worse cuse the video is by the JP Devs, In house, should be freaking instant yet it has a 1 second delay from when he starts running to when it actually cancels.

http://www.youtube.com/watch?v=zioXFLxK68I

Take:
Confirm Spell 0:25
Run: 0:26
Cancels: 0:28

2 second delay! not 0.3

Likely cant be fixed until v2.0 with the bad servers, but that is where I see the problem.