One of my friends came up to me and told me to ask my guild's GM if the Casa de Meurtos Quests were cursed. I had already done them all by then, and was perplexed on why he asked that. When I asked why he just said that a GM from TEST made all of his members not do the quest.
Still wondering will, or even IF, something happens if you do the quest. But for now, I'm enjoying my 10K gold and 5000 reputation
.