Last night in the Rise, Mage, Lich, & Dragon rooms, I cast both Healing Blast & Ray all night on my 5 man group. Sometimes, I would cast the heal, nothing would happen, I would cast spell again, it would cast. This was not a one time occurrence, it happened all night long. I tried to check the combat logs, but because I was cast heals over and over could not determine what was going on. I 100% know this was NOT a line of sight issue as it occurred when I was right on top of my intended target as well. Now since R54, there seems to be a strange lag in the game, while this could be related to that issue, the heals never go off, they are not delayed, the heals just do not heal the target. Anyone else having this problem?