Paladins haven't always had the most amicable relationship with the community team and developers at Blizzard. Retribution paladins have fought for years with the blues over their perception of being constantly nerfed, which is a nice way to say that ret paladins enjoy playing the victim. Their claims do have some merit, though, as the paladin class has undergone major transformations in nearly every expansion, and not always for the better.
In patch 4.3.2, the developers are handling a few balance issues. Fire mages are being tweaked downward, while hunters should be doing slightly better overall. Oh, and the mana cost of Holy Radiance is going up by 14%. Holy paladins are already complaining on the forums about this nerf, but the truth is that it's irrelevant. Even as Holy Radiance has seen two nerfs in as many patches, it's still an amazing spell. It takes a lot more than a 14% mana cost bump to erase Holy Radiance's dominance.