Essentially getting a new game
An issue that many classes are having due to the many mechanic changes in the game is mana consumption An excellent example is a raid healer Shaman that I play with that never runs out of mana in the current game in raids, it seems like he hardly ever drinks. However even in simple content like Forsaken World Gold, he now has to site and drink after every fight. The mages that we group with are having similar issues. We can not quite put a finger on what is causing it, but are looking into it, and will keep exploring the issue. It again shows that many of us came into the beta expecting basically a few new spells and 10 levels to blast through and are essentially getting a new game. We all love the learning curve, and it is what keeps us coming back.