Update of Instance Capacity Issue
Blizzard has mentioned before, in order to offer WoW players better game experience, better WoW Gold farming journey, better WoW Power Leveling process, they have been working hardly to address recent instance capacity issue through a number of reconfigurations and optimizations. Now, it is announced that the process is finished on all North American realms. Since the optimizations, all realms have shown an improvement in instance performance as well as a noticeable reduction in the amount of players hitting the instance limit. Of course, Blizzard will keep on monitoring the situation closely to make further changes if it is helpful to perfect your game experience of getting World of Warcraft Gold. You will have a good time in World of Warcraft.
Arena Title Issue
When awarding the titles for Arana Season 6, Blizzard met an issue where characters who earned the titles in previous seasons, but did not earn them in season 6, received them again along with the corresponding achievements. They have found the cause of this and will be removing the unearned titles and achievements during the next regularly scheduled maintenance. Please be patient.
High Tank Damage
Healing would be much easier if tank damage is chilled out. Many WoW players claim in the forum that Blizzard only want to make life hard for the healers, farming WoW Money and WoW Powerleveling is more difficult. But in fact, many players would be bored or risk losing their spot when raid didn't need as many healers.
Blizzard thinks that a better answer is to increase tank health and have bosses hit hard but not as often. The end result would hopefully be that it took several big heals to bring a tank back up rather than a single Holy Light crit. Currently overhealing isn't particularly scary because mana is cheap and the risk of the tank (or anyone dying) on a given GCD is very real.
Now, if you put say 3 healers on the tank that isn't because it requires that much healing per second to keep the tank alive. Instead, it's because with 3 healers hopefully someone will be always casting and can land a heal after big hit one but before big hit two, which would kill the tank. If a few hots or shields get stomped on along the way, oh well. Ideally, you put 3 healers on the tank because it takes 3 big heals to get the tank back up. If you don't coordinate well or use a big heal when a medium heal would do, then you'd risk too much overhealing and ultimately running out of mana. You'd need to heal smart as well as just healing fast and big, which is what the current design really encourages.
A Blizzard poster predicts that health pools of all players will go way up in Cataclysm relative to player damage and healing. Everything (meaning PvP too) would be slowed down just a little so that making the right choice would sometimes trump making the fast choice.
Be reassured please! Blizzard will give all of us a fantastic world to fight, to play, to farm Gold WoW, to do World of Warcraft Power Leveling!