I noticed this last night as well. I was the healer for the main tank in the DRG last fight and everything was going great until I hit my cure and nothing happened. I hit my cure again quickly, nothing happened so I keep hitting my cure and all the while my PLD is losing HP. Guess what happens? He dies as my cure finally decides to work, except it gets cast on me cause well, he's dead >.> I got him up pretty quickly and we recovered but come on!!!